八年级下册物理超难题，必须 是大神题，不要超纲的、八年级上册也不要。 初二物理上册题目及答案，越难越好，越多越好！
\u54c8\u5c14\u6ee8\u7269\u74068\u5e74\u7ea7\u4e0a\u518c\uff0c\u80fd\u628a\u540c\u9f84\u4eba\u96be\u9053\u5374\u4e0d\u8ba9\u8001\u5e08\u89c9\u5f97\u8d85\u7eb2\u7684\u9898\uff0c\u8981\u90a3\u79cd\u7ed5\u5f2f\u7684\u4e0d\u8ba1\u7a7a\u6c14\u963b\u529b\uff0c\u5c0f\u660e\u5728\u60ac\u5d16\u8fb9\uff0c\u624b\u91cc\u9759\u6b62\u653e\u5f00\u4e00\u5757\u77f3\u5934\uff0c5\u79d2\u540e\u542c\u5230\u77f3\u5934\u843d\u5730\u58f0\u97f3\uff0c\u6c42\u60ac\u5d16\u9ad8\u5ea6\u3002
\uff08\u97f3\u901f\u5df2\u77e5\uff0cg=9.8\uff09
\u521d\u4e8c\u7269\u7406\u7ade\u8d5b\u9898\u5982\u4e0b
\u8d5b\u70b91 \u5149\u7684\u6298\u5c04\u89c4\u5f8b
\u4f8b1 \u5982\u56fe\uff0c\u5728\u4e00\u5757\u73bb\u7483\u7816\u4e0a\u6316\u53bb\u4e00\u5757\u534a\u5706\u5f62\u7684\u73bb\u7483\uff0c\u5982\u6709\u4e00\u6761\u901a\u8fc7\u5706\u5fc3\u7684\u5149\u7ebf\u5c04\u5230\u8be5\u73bb\u7483\u7816\u4e0a\uff0c\u5219\u6b63\u786e\u7684\u5149\u8def\u56fe\u4e3a( )
A
B
C
D
\u3010\u5207\u9898\u6280\u5de7\u3011\u3000\u4e00\u6761\u901a\u8fc7\u5706\u5fc3\u7684\u5149\u7ebf\u5c04\u5230\u534a\u7403\u9762\u4e0a\uff0c\u5b83\u548c\u754c\u9762\u7684\u6cd5\u7ebf\u91cd\u5408\uff0c\u5176\u5165\u5c04\u89d2\u548c\u6298\u5c04\u89d2\u90fd\u7b49\u4e8e0\u00b0\uff0c\u4f20\u64ad\u65b9\u5411\u4e0d\u6539\u53d8\uff1b\u5230\u4e86\u73bb\u7483\u4e2d\u4ee5\u540e\u5728\u540c\u79cd\u4ecb\u8d28\u4e2d\uff0c\u7ee7\u7eed\u6cbf\u76f4\u7ebf\u4f20\u64ad\uff1b\u4ece\u73bb\u7483\u4e2d\u5c04\u51fa\uff0c\u5149\u4ece\u5149\u901f\u5c0f\u7684\u4ecb\u8d28\u8fdb\u5165\u5149\u901f\u5927\u7684\u4ecb\u8d28\uff0c\u6240\u4ee5\u6298\u5c04\u5149\u5e94\u8fdc\u79bb\u6cd5\u7ebf\uff0e
\u3010\u89c4\u8303\u89e3\u7b54\u3011\u3000A
\u3010\u501f\u9898\u53d1\u6325\u3011\u3000\u82e5\u4e24\u79cd\u4ecb\u8d28\u7684\u754c\u9762\u662f\u66f2\u9762\uff0c\u5176\u6cd5\u7ebf\u5e94\u8be5\u548c\u66f2\u9762\u7684\u5207\u9762\u5782\u76f4\uff0c\u5373\u5148\u8fc7\u5165\u5c04\u70b9\u4f5c\u66f2\u9762\u7684\u5207\u7ebf\uff0c\u7136\u540e\u8fc7\u5165\u5c04\u70b9\u4f5c\u5207\u7ebf\u7684\u5782\u7ebf\u5373\u4e3a\u8be5\u66f2\u9762\u7684\u6cd5\u7ebf\uff0e\u82e5\u66f2\u9762\u662f\u5706\u9762\u6216\u7403\u9762\uff0c\u5219\u6cd5\u7ebf\u5c31\u662f\u8fc7\u5165\u5c04\u70b9\u7684\u5706\u9762\u6216\u7403\u9762\u7684\u534a\u5f84\u4e86\uff0c\u6240\u4ee5\u8fc7\u5706\u9762\u6216\u7403\u9762\u534a\u5f84\u7684\u5149\u7ebf\u8fdb\u5165\u53e6\u79cd\u4ecb\u8d28\uff0c\u4f20\u64ad\u65b9\u5411\u4e0d\u6539\u53d8\uff0e
\u3010\u540c\u7c7b\u62d3\u5c55\u3011\u3000\u5982\u56fe\uff0c\u4e00\u5757\u77e9\u5f62\u73bb\u7483\u7816\u5207\u5272\u6210\u56fe\u4e2d\u5f62\u72b6
\u540e\u62c9\u5f00\u4e00\u6bb5\u8ddd\u79bb\uff0c\u5e73\u884c\u4e8e\u4e3b\u5149\u8f74\u7684\u5149\u7ebf\u4ece\u5de6\u9762\u5c04\u5165\uff0c\u5219\u4ece\u6700\u53f3\u8fb9
\u5c04\u51fa\u7684\u5149\u7ebf( )
A\uff0e\u4ecd\u7136\u4fdd\u6301\u5e73\u884c\u5149\u7ebf B\uff0e\u4e00\u5b9a\u662f\u5e73\u884c\u5149\u7ebf
C\uff0e\u4e00\u5b9a\u662f\u4f1a\u805a\u5149\u7ebf D\uff0e\u7ed3\u8bba\u4e0ed\u6709\u5173\uff0c\u4ee5\u4e0a\u7ed3\u8bba\u90fd\u53ef\u80fd
\u8d5b\u70b92 \u5149\u6298\u5c04\u6210\u50cf\u53ca\u50cf\u7684\u5e94\u7528
\u4f8b2 \u5982\u56fe\uff0c\u628a\u7531\u540c\u79cd\u73bb\u7483\u5236\u6210\u7684\u6b63\u65b9\u4f53\u73bb\u7483\u7816A\u548c\u534a\u7403\u5f62\u73bb\u7483\u7816B\u653e\u5728\u62a5\u7eb8\u4e0a\uff0c\u82e5\u6b63\u65b9\u4f53\u7684\u8fb9\u957f\u548c\u534a\u7403\u7684\u534a\u5f84\u76f8\u540c\uff0c\u5219\u4ece\u6b63\u4e0a\u65b9\u6cbf\u56fe\u4e2d
\u865a\u7ebf\uff08\u4e2d\u5fc3\u7ebf\uff09\u65b9\u5411\u5f80\u4e0b\u770b\u4e2d\u5fc3\u7ebf\u5bf9\u51c6\u7684\u6587\u5b57( )
A\uff0eA\u548cB\u4e2d\u770b\u5230\u7684\u90fd\u6bd4\u5b9e\u9645\u7684\u9ad8
B\uff0eA\u4e2d\u770b\u5230\u7684\u6bd4\u5b9e\u9645\u7684\u9ad8\uff0eB\u4e2d\u770b\u5230\u7684\u6bd4\u5b9e\u9645\u7684\u4f4e
C\uff0eA\u4e2d\u770b\u5230\u7684\u6bd4\u5b9e\u9645\u7684\u9ad8\uff0cB\u4e2d\u770b\u5230\u7684\u4e0e\u5b9e\u9645\u7684\u4e00\u6837\u9ad8
D\uff0eA\u548cB\u4e2d\u770b\u5230\u7684\u90fd\u4e0e\u5b9e\u9645\u4e00\u6837\u9ad8
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\u3010\u89c4\u8303\u89e3\u7b54\u3011\u3000C
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\u3010\u540c\u7c7b\u62d3\u5c55\u3011\u3000\u7ec6\u5fc3\u7684\u5c0f\u660e\u6ce8\u610f\u5230\u8fd9\u6837\u4e00\u4e2a\u73b0\u8c61\uff1a\u5982\u679c\u6253\u5f00\u7a97\u6237\uff0c\u76f4\u63a5\u770b\u8fdc\u5904\u7684\u9ad8\u67b6\u7535\u7ebf\uff0c\u7535\u7ebf\u5448\u89c4\u5219\u7684\u4e0b\u5f2f\u5f27\u5f62\uff1b\u800c\u5982\u679c\u9694\u7740\u7a97\u73bb\u7483\u770b\uff0c\u7535\u7ebf\u867d\u7136\u6574\u4f53\u4e0a\u4e5f\u5448\u5f27\u5f62\uff0c\u4f46\u7535\u7ebf\u4e0a\u7684\u4e0d\u540c\u90e8\u4f4d\u6709\u660e\u663e\u7684\u4e0d\u89c4\u5219\u5f2f\u66f2\uff0c\u5f53\u8f7b\u5fae\u6446\u52a8\u5934\u90e8\u8ba9\u89c6\u7ebf\u79fb\u52a8\u65f6\uff0c\u7535\u7ebf\u4e0a\u7684\u4e0d\u89c4\u5219\u5f2f\u66f2\u60c5\u666f\u4e5f\u5728\u79fb\u52a8\uff0e\u4ea7\u751f\u8fd9\u79cd\u73b0\u8c61\u7684\u4e3b\u8981\u539f\u56e0\u662f( )
A\uff0e\u73bb\u7483\u4e0a\u4e0d\u540c\u90e8\u4f4d\u5bf9\u5149\u7684\u5438\u6536\u7a0b\u5ea6\u4e0d\u540c
B\uff0e\u73bb\u7483\u4e0a\u4e0d\u540c\u90e8\u4f4d\u7684\u900f\u5149\u7a0b\u5ea6\u4e0d\u540c
C\uff0e\u73bb\u7483\u4e0a\u4e0d\u540c\u90e8\u4f4d\u7684\u539a\u5ea6\u4e0d\u540c
D\uff0e\u73bb\u7483\u4e0a\u4e0d\u540c\u90e8\u4f4d\u5bf9\u5149\u7684\u53cd\u5c04\u4e0d\u540c
\u4f8b3 \u5982\u56fe\u6c34\u9762\u4e0a\u65b9\u6709\u4e00\u53d1\u5149\u70b9A1\uff0c\u6c34\u4e2d\u53e6\u6709\u4e00\u53d1\u5149\u70b9A2\uff0c\u4eba\u5728\u7a7a\u6c14\u4e2d\u770b\u5230A2\u5728\u6c34\u4e2d\u7684\u4f4d\u7f6e\u5c31\u662fA1\u5728\u6c34\u4e2d\u7684\u50cf\u7684\u4f4d\u7f6e\uff0c\u753b\u51fa\uff1a
(1)A1\u53d1\u51fa\u7684\u5149\u7ecf\u6c34\u9762\u53cd\u5c04\u8fdb\u5165\u4eba\u773c\u7684\u5149\u8def\u56fe
(2)A2\u53d1\u51fa\u7684\u5149\u8fdb\u5165\u4eba\u773c\u7684\u5149\u8def\u56fe
\u7532
\u4e59
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\u3010\u89c4\u8303\u89e3\u7b54\u3011\u3000\u5982\u56fe\u4e59
\u3010\u501f\u9898\u53d1\u6325\u3011\u3000\u773c\u775b\u770b\u5230\u6c34\u4e2d\u7684\u7269\u4f53\u7684\u50cf\u6709\u4e24\u79cd\u4f5c\u56fe\u65b9\u6cd5\uff1a\u7b2c\u4e00\uff0c\u53ef\u4ee5\u76f4\u63a5\u7528\u6298\u5c04\u89c4\u5f8b\u4f5c\u51fa\u50cf\u7684\u5927\u6982\u4f4d\u7f6e\uff1b\u7b2c\u4e8c\uff0c\u5728\u77e5\u9053\u50cf\u4f4d\u7f6e\u7684\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u4f5c\u51fa\u6210\u50cf\u7684\u7cbe\u786e\u5149\u8def\u56fe\uff0c\u8fde\u63a5\u50cf\u548c\u773c\u775b\u5c31\u5f97\u5230\u6298\u5c04\u5149\u7ebf\u548c\u5165\u5c04\u70b9\uff0c\u518d\u8fde\u63a5\u7269\u4f53\u548c\u5165\u5c04\u70b9\uff0c\u5c31\u80fd\u4f5c\u51fa\u5165\u5c04\u5149\u7ebf\uff0e\u5728\u4f5c\u56fe\u65f6\u5e94\u7279\u522b\u6ce8\u610f\u5149\u7ebf\u7684\u4f20\u64ad\u65b9\u5411\uff0c\u4e0d\u662f\u4ece\u773c\u775b\u5c04\u5230\u7269\u4f53\u4e0a\uff0e
\u3010\u540c\u7c7b\u62d3\u5c55\u3011\u3000\u5982\u56fe\uff0c\u5c0f\u660e\u7ad9\u5728\u6e38\u6cf3\u6c60\u8fb9A\u5904\uff0c\u770b\u5230\u8def\u706fB\u5728\u6c60\u6c34\u4e2d\u7684\u50cf\u4e0e\u4ed6\u770b\u5230\u7684\u6c60\u4e2d\u4e00\u6761\u9c7c\u5728C\u70b9\u91cd\u5408\uff0c\u7528\u5149\u5b66\u4f5c\u56fe\u6cd5\u786e\u5b9a\u8def\u706fB\u7684\u4f4d\u7f6e\u548c\u9c7c\u7684\u5927\u81f4\u4f4d\u7f6e\uff0e
\u8d5b\u70b93 \u5149\u7684\u8272\u6563\u548c\u8272\u5149\u7684\u6298\u5c04
\u4f8b4 \u4e00\u4e9b\u79d1\u7814\u5de5\u4f5c\u8005\u53d7\u5230\u4e09\u68f1\u955c\u5bf9\u81ea\u7136\u5149\u7684\u8272\u6563\u73b0\u8c61\u7684\u542f\u53d1\uff0c\u901a\u8fc7\u7cbe\u7ec6\u5b9e\u9a8c\u53d1\u73b0\uff1a\u5206\u522b\u7528\u7ea2\u5149\u548c\u84dd\u5149\u4ee5\u5982\u56fe3-6\u7684\u65b9\u5f0f\u7167\u5c04\u51f8\u900f\u955c\u65f6\uff0c\u51f8\u900f\u955c\u7684\u7126\u70b9\u4f4d\u7f6e\u7565\u6709\u5dee\u5f02\uff08\u56fe\u4e2da\u3001b\u70b9\uff09\uff0e\u6839\u636e\u4f60\u7684\u5206\u6790\uff0c\u7ea2\u5149\u7167\u5c04\u65f6\u7684\u7126\u70b9\u4f4d\u7f6e\u5e94\u662f\u56fe\u4e2d\u7684_______\u70b9\uff0c\u84dd\u5149\u7167\u5c04\u65f6\u7684\u7126\u70b9\u4f4d\u7f6e\u5e94\u662f\u56fe\u4e2d\u7684_______\u70b9\uff0e
\u3010\u5207\u9898\u6280\u5de7\u3011\u3000\u81ea\u7136\u5149\u901a\u8fc7\u4e09\u68f1\u955c\u4e24\u6b21\u6298\u5c04\u540e\uff0c\u5728\u5149\u5c4f\u5728\u5f97\u5230\u4e00\u6761\u5f69\u8272\u5149\u5e26\uff0c\u4ece\u4e0a\u5230\u4e0b\u4f9d\u6b21\u4e3a\u7ea2\u3001\u6a59\u3001\u9ec4\u3001\u7eff\u3001\u84dd\u3001\u975b\u3001\u7d2b\u4e03\u79cd\u8272\u5149\uff0c\u8fd9\u4e2a\u73b0\u8c61\u8bf4\u660e\u540c\u4e2a\u68f1\u955c\uff0c\u5bf9\u4e0d\u540c\u7684\u8272\u5149\u7684\u6298\u5c04\u80fd\u529b\u4e0d\u540c\uff0c\u5bf9\u7ea2\u5149\u7684\u6298\u5c04\u80fd\u529b\u5f31\uff0c\u5bf9\u7d2b\u5149\u7684\u6298\u5c04\u80fd\u529b\u5f3a\uff0e\u82e5\u662f\u51f8\u900f\u955c\uff0c\u5bf9\u7d2b\u5149\u7684\u4f1a\u805a\u80fd\u529b\u5c31\u6bd4\u5bf9\u7ea2\u5149\u7684\u5f3a\uff0c\u6240\u4ee5\u7d2b\u5149\u7684\u7126\u8ddd\u5c0f\uff0c\u7ea2\u5149\u7684\u7126\u8ddd\u5927\uff0c\u8fd9\u79cd\u73b0\u8c61\u5c31\u662f\u6444\u5f71\u4e0a\u7167\u7247\u8272\u5dee\u7684\u5f62\u6210\u539f\u56e0\uff0e
\u3010\u89c4\u8303\u89e3\u7b54\u3011\u3000b\uff0ca
\u3010\u501f\u9898\u53d1\u6325\u3011\u3000\u5bf9\u5149\u7684\u6298\u5c04\u7684\u7a0b\u5ea6\u4e0d\u4ec5\u4e0e\u4ecb\u8d28\u6709\u5173\uff0c\u8fd8\u4e8e\u8272\u5149\u7684\u79cd\u7c7b\u6709\u5173\uff0e\u4e0d\u540c\u7684\u4ecb\u8d28\u5bf9\u540c\u79cd\u8272\u5149\u7684\u504f\u6298\u7a0b\u5ea6\u4e0d\u540c\uff0c\u540c\u79cd\u4ecb\u8d28\u5bf9\u4e0d\u540c\u8272\u5149\u7684\u504f\u6298\u7a0b\u5ea6\u4e5f\u4e0d\u540c\uff0c\u5149\u7684\u8272\u6563\u5c31\u5229\u7528\u8fd9\u4e2a\u539f\u7406\u5c06\u81ea\u7136\u5149\u4e2d\u7684\u4e0d\u540c\u8272\u5149\u5206\u5f00\u7684\uff0e
\u3010\u540c\u7c7b\u62d3\u5c55\u3011\u3000\u4eca\u5e745\u670817\u65e5\u4e2d\u5348\uff0c\u6211\u5e02\u90e8\u5206\u5e02\u6c11\u770b\u5230\u4e86\u592a\u9633
\u5468\u56f4\u51fa\u73b0\u4e2a\u4e03\u5f69\u201c\u5149\u73af\u201d\uff0c\u5982\u56fe\uff0c\u8fd9\u5c31\u662f\u201c\u65e5\u6655\u201d\uff0e\u8fd9\u79cd\u5929\u8c61\u5f62\u6210
\u7684\u91cd\u8981\u539f\u56e0\u662f\u9633\u5149\u901a\u8fc7\u65e0\u6570\u5c0f\u51b0\u6676\u540e\u53d1\u751f\u4e86\u8272\u6563\uff0c\u5176\u4e2d\u5404\u8272\u5149\u6309\u7ea2\u3001
\u6a59\u3001\u9ec4\u3001_______\u3001\u84dd\u3001\u975b\u3001\u7d2b\u7684\u987a\u5e8f\u4f9d\u6b21\u6392\u5217\uff0c\u8bf4\u660e\u4e86\u9633\u5149
\u662f_______\uff08\u586b\u201c\u5355\u8272\u5149\u201d\u6216\u201c\u590d\u8272\u5149\u201d\uff09\uff0e
\u8d5b\u70b94 \u773c\u775b\u770b\u5230\u7684\u7269\u4f53\u7684\u989c\u8272
\u4f8b5 \u9ed1\u767d\u7167\u7247\u5728\u6697\u5ba4\u8fdb\u884c\u52a0\u5de5\u65f6\uff0c\u6240\u7528\u7684\u5b89\u5168\u706f\u662f\u7ea2\u8272\u7684\uff0c\u7528\u7684\u6e29\u5ea6\u8ba1\u7684\u6db2\u67f1\u662f\u84dd\u8272\u7684\uff0c\u800c\u4e0d\u662f\u7ea2\u8272\u7684\uff0c\u4e0b\u5217\u6709\u5173\u7684\u8bf4\u6cd5\u4e2d\u6b63\u786e\u7684\u662f( )
A\uff0e\u6697\u5ba4\u5b89\u5168\u706f\u662f\u7ea2\u706f\uff0c\u56e0\u800c\u4e00\u5207\u7269\u4f53\u770b\u8d77\u6765\u90fd\u662f\u7ea2\u8272\u7684\uff0c\u6e29\u5ea6\u8ba1\u7684\u7ea2\u8272\u6db2\u67f1\u5728\u8fd9\u79cd\u73af\u5883\u4e2d\u4e0d\u6613\u770b\u6e05\u695a
B\uff0e\u6e29\u5ea6\u8ba1\u7684\u84dd\u8272\u6db2\u67f1\u5728\u7ea2\u5149\u7167\u5c04\u4e0b\u662f\u9ed1\u7684
C\uff0e\u84dd\u8272\u6db2\u67f1\u5728\u7ea2\u5149\u4e0b\u770b\u5f97\u66f4\u6e05\u695a
D\uff0e\u7ea2\u8272\u6db2\u67f1\u5728\u7ea2\u706f\u4e0b\u53cd\u5c04\u767d\u5149
\u3010\u5207\u9898\u6280\u5de7\u3011\u3000\u7ea2\u8272\u7684\u5b89\u5168\u706f\u53d1\u51fa\u7ea2\u5149\uff0c\u84dd\u8272\u7684\u6db2\u67f1\u53ea\u900f\u8fc7\u84dd\u5149\uff0c\u5438\u6536\u5176\u4ed6\u7684\u8272\u5149\uff0c\u6240\u4ee5\u5f53\u7ea2\u5149\u7167\u5c04\u5230\u84dd\u8272\u7684\u6db2\u67f1\u65f6\uff0c\u6e29\u5ea6\u8ba1\u7684\u6db2\u67f1\u5c06\u7ea2\u5149\u5438\u6536\u4e86\uff0c\u6ca1\u6709\u4ece\u6e29\u5ea6\u8ba1\u6765\u7684\u5149\u7ebf\u8fdb\u5165\u773c\u775b\uff0c\u6240\u4ee5\u5e94\u662f\u9ed1\u8272\u7684\uff0e
\u3010\u89c4\u8303\u89e3\u7b54\u3011\u3000B
\u3010\u501f\u9898\u53d1\u6325\u3011\u3000\u6211\u4eec\u8c08\u8bba\u7269\u4f53\u7684\u989c\u8272\u6307\u7684\u662f\u7528\u592a\u9633\u5149\u7167\u5c04\u7269\u4f53\u65f6\uff0c\u4eba\u770b\u5230\u7684\u7269\u4f53\u7684\u989c\u8272\uff0c\u6211\u4eec\u79f0\u8fd9\u65f6\u7684\u989c\u8272\u4e3a\u7269\u4f53\u7684\u201c\u672c\u8272\u201d\uff0c\u4f46\u662f\u5982\u679c\u7167\u5c04\u7684\u5149\u7ebf\u4e0d\u662f\u81ea\u7136\u5149\uff0c\u800c\u662f\u8272\u5149\uff0c\u6b64\u65f6\u7269\u4f53\u53cd\u5c04\u6216\u900f\u8fc7\u7684\u5c31\u4e0d\u662f\u5b83\u7684\u672c\u8272\u5149\uff0c\u6240\u4ee5\u4eba\u770b\u5230\u7684\u7269\u4f53\u7684\u989c\u8272\u4e0d\u4ec5\u4e0e\u7269\u4f53\u7684\u672c\u8272\u6709\u5173\uff0c\u8fd8\u4e0e\u7167\u5c04\u7269\u4f53\u7684\u5149\u6e90\u6709\u5173\uff0e\u7528\u4e00\u79cd\u8272\u5149\u7167\u5c04\u5176\u4ed6\u672c\u8272\u7684\u7269\u4f53\u65f6\uff0c\u8272\u5149\u88ab\u5438\u6536\u4e86\uff0c\u4eba\u770b\u5230\u7684\u7269\u4f53\u90fd\u662f\u9ed1\u8272\uff0e\u7528\u4e00\u79cd\u8272\u5149\u7167\u5c04\u672c\u8272\u4e3a\u9ed1\u8272\u7684\u7269\u4f53\u65f6\uff0c\u4eba\u770b\u5230\u7684\u7269\u4f53\u662f\u9ed1\u8272\uff0e\u7528\u4e00\u79cd\u8272\u5149\u7167\u5c04\u5230\u767d\u8272\u7269\u4f53\u4e0a\u65f6\uff0c\u4eba\u770b\u5230\u7269\u4f53\u7684\u989c\u8272\u548c\u8272\u5149\u7684\u989c\u8272\u4e00\u81f4\uff0e
\u3010\u540c\u7c7b\u62d3\u5c55\u3011\u3000\u7528\u4e00\u652f\u53ef\u4ee5\u5199\u51fa\u7ea2\u989c\u8272\u5b57\u7684\u7b14\u5728\u4e00\u5f20\u767d\u7eb8\u4e0a\u5199\u4e00\u884c\u5b57\uff0c\u5219\u4e0b\u5217\u8bf4\u6cd5\u4e2d\u6b63\u786e\u7684\u662f( )
A\uff0e\u767d\u7eb8\u4e0a\u7684\u8fd9\u4e00\u884c\u5b57\uff0c\u5728\u9633\u5149\u4e0b\u4f1a\u5438\u6536\u767d\u5149\u4e2d\u7684\u7ea2\u8272\u5149\uff0c\u6240\u4ee5\u8fd9\u4e00\u884c\u5b57\u662f\u7ea2\u8272\u7684\uff0e
B\uff0e\u767d\u7eb8\u4e0a\u7684\u8fd9\u4e00\u884c\u5b57\uff0c\u5728\u9633\u5149\u4e0b\u4f1a\u53cd\u5c04\u767d\u5149\u4e2d\u7684\u7ea2\u8272\u5149\uff0c\u6240\u4ee5\u8fd9\u4e00\u884c\u5b57\u662f\u7ea2\u8272\u7684\uff0e
C\uff0e\u767d\u7eb8\u4e0a\u7684\u8fd9\u4e00\u884c\u5b57\uff0c\u7531\u4e8e\u5b83\u80fd\u53d1\u51fa\u7ea2\u5149\uff0c\u6240\u4ee5\u8fd9\u4e00\u884c\u5b57\u662f\u7ea2\u8272\u7684\uff0e
D\uff0e\u767d\u7eb8\u4e0a\u7684\u8fd9\u4e00\u884c\u5b57\uff0c\u5982\u679c\u53ea\u7528\u7eff\u8272\u5149\u7167\u5c04\u4e0a\u53bb\uff0c\u8fd9\u4e00\u884c\u5b57\u5c31\u4f1a\u662f\u7eff\u8272\u7684\uff0e
\u8d5b\u70b95 \u6563\u5c04
\u4f8b6 \u6c99\u5c18\u66b4\u662f\u4e00\u79cd\u571f\u5730\u6c99\u5316\u5f62\u6210\u7684\u6076\u52a3\u7684\u6c14\u5019\u73b0\u8c61\uff0c\u53d1\u751f\u6c99\u5c18\u66b4\u65f6\u80fd\u89c1\u5ea6\u53ea\u6709\u51e0\u5341\u7c73\uff0c\u5929\u7a7a\u53d8\u9ec4\u53d1\u6697\uff0c\u4ea7\u751f\u8fd9\u79cd\u73b0\u8c61\u7684\u539f\u56e0( )
A\uff0e\u53ea\u6709\u6ce2\u957f\u8f83\u957f\u7684\u4e00\u90e8\u5206\u5149\u624d\u80fd\u8fbe\u5230\u5730\u9762
B\uff0e\u53ea\u6709\u6ce2\u957f\u8f83\u77ed\u7684\u4e00\u90e8\u5206\u5149\u624d\u80fd\u8fbe\u5230\u5730\u9762
C\uff0e\u53ea\u6709\u9891\u7387\u8f83\u5927\u7684\u4e00\u90e8\u5206\u5149\u624d\u80fd\u8fbe\u5230\u5730\u9762
D\uff0e\u53ea\u6709\u80fd\u91cf\u8f83\u5927\u7684\u4e00\u90e8\u5206\u5149\u624d\u80fd\u8fbe\u5230\u5730\u9762
\u3010\u5207\u9898\u6280\u5de7\u3011\u3000\u8fd9\u662f\u7a7a\u6c14\u548c\u7070\u5c18\u5bf9\u5149\u7684\u6563\u5c04\u73b0\u8c61\uff0c\u7a7a\u6c14\u5206\u5b50\u548c\u7070\u5c18\u5bf9\u6ce2\u957f\u77ed\u7684\u5149\u6563\u5c04\u591a\uff0c\u6563\u5c04\u5149\u56de\u5230\u7a7a\u4e2d\uff0c\u7559\u4e0b\u6765\u5c04\u5230\u5730\u9762\u7684\u662f\u6ce2\u957f\u957f\u7684\u7ea2\u5149\u548c\u9ec4\u5149\u3001\u6a59\u5149\uff0c\u6240\u4ee5\u53d1\u751f\u6c99\u5c18\u66b4\u65f6\u5929\u7a7a\u53d8\u9ec4\u53d8\u6697\uff0e
\u3010\u89c4\u8303\u89e3\u7b54\u3011\u3000A
\u3010\u501f\u9898\u53d1\u6325\u3011\u3000\u5149\u5728\u5927\u6c14\u4e2d\u4f20\u64ad\u65f6\uff0c\u7a7a\u6c14\u5206\u5b50\u548c\u7a7a\u6c14\u4e2d\u7684\u7070\u5c18\u5bf9\u5149\u6709\u6563\u5c04\u7684\u73b0\u8c61\uff0c\u6ce2\u957f\u8f83\u77ed\u7684\u5149\u5bb9\u6613\u88ab\u6563\u5c04\uff0c\u6ce2\u957f\u8f83\u957f\u7684\u5149\u4e0d\u5bb9\u6613\u88ab\u6563\u5c04\uff0c\u5b83\u4eec\u7684\u7a7f\u900f\u80fd\u529b\u5f3a\u4e9b\uff0c\u6240\u4ee5\u7981\u6b62\u901a\u884c\u7684\u706f\u7528\u7ea2\u5149\uff0c\u6c7d\u8f66\u7684\u9632\u96fe\u706f\u7528\u9ec4\u5149\uff0c\u5c31\u662f\u56e0\u4e3a\u5c31\u662f\u5728\u80fd\u89c1\u5ea6\u4f4e\u7684\u5929\u6c14\u91cc\uff0c\u5b83\u4eec\u4f20\u64ad\u7684\u6bd4\u6ce2\u957f\u77ed\u7684\u5149\u8fdc\uff0c\u4fbf\u4e8e\u53f8\u673a\u53ca\u65e9\u53d1\u73b0\uff0e\u5149\u7684\u6ce2\u957f\u548c\u9891\u7387\u7684\u5173\u7cfb\u662f\uff1a\u6ce2\u957f\u957f\u7684\u5149\uff0c\u9891\u7387\u5c0f\uff0c\u80fd\u91cf\u5c0f\uff1b\u6ce2\u957f\u77ed\u7684\u5149\uff0c\u9891\u7387\u5927\uff0c\u80fd\u91cf\u5927\uff0e
\u3010\u540c\u7c7b\u62d3\u5c55\u3011\u3000\u9999\u70df\u70b9\u71c3\u540e\uff0c\u5192\u51fa\u7684\u70df\u96fe\u770b\u4e0a\u53bb\u662f\u84dd\u8272\u7684\uff0c\u8fd9\u662f\u56e0\u4e3a( )
A\uff0e\u70df\u96fe\u7684\u9897\u7c92\u672c\u8eab\u662f\u84dd\u8272\u7684
B\uff0e\u70df\u96fe\u5c06\u5149\u7ebf\u4e2d\u5176\u4ed6\u8272\u5149\u6ee4\u6389\uff0c\u53ea\u6709\u84dd\u5149\u900f\u5c04\u51fa\u6765
C\uff0e\u70df\u96fe\u7684\u9897\u7c92\u5bf9\u84dd\u8272\u5149\u6563\u5c04\u5f3a\u70c8
D\uff0e\u70df\u96fe\u7684\u9897\u7c92\u5438\u6536\u5149\u7ebf\u540e\uff0c\u53d1\u51fa\u84dd\u8272\u8367\u5149
\u53c2\u8003\u7b54\u68481\uff0eC\u7531\u56fe\u53ef\u770b\u51fa\u77e9\u5f62\u73bb\u7483\u7816\u88ab\u5207\u5272\u4ee5\u540e\uff0c\u5de6\u8fb9\u4e00\u5757\u53ef\u89c6\u4e3a\u51f9\u900f\u955c\uff0c\u53f3\u8fb9\u4e00\u5757\u53ef\u89c6\u4e3a\u51f8\u900f\u955c\uff0e\u51f9\u900f\u955c\u53ef\u4ee5\u4f7f\u5149\u7ebf\u53d1\u6563\uff0c\u51f8\u900f\u955c\u53ef\u4ee5\u4f7f\u5149\u7ebf\u4f1a\u805a\uff0e\u5f53d=0\u65f6\uff0c\u865a\u5b9e\u7126\u70b9\u91cd\u5408\uff0c\u5e73\u884c\u5149\u8fdb\uff0c\u5e73\u884c\u5149\u7ebf\u51fa\uff1b\u5f53d\uff1e0\u65f6\uff0c\u5149\u7ebf\u4f1a\u805a\uff0c\u5982\u56fe\u6240\u793a\uff0e2\uff0eC 3\uff0e\u5982\u56fe 4\uff0e\u7eff,\u590d\u8272\u5149 5\uff0eB 6\uff0eC
设 串联时灯的实际电压为 U2, 实际功率为 P2,定值电阻电压为U3 ,则：
1/4P1=U2*U2/R1 ,联立这两个式子得到：U2=6V, U3=6V, 所以：R1=R , 则并联时通过灯的电流为：0.625/2=0.3125 A, 额定功率P1=12V*0.3125 A=3.75 W,实际功率P2=1/4P1=0.9375W
原题目中“通过R电流为原来的1/3”应为“通过R电流为原来的1/2”才对，望采纳！
灯L和定值电阻R并联于电压为12V电路中，L正常发光，干路电流为0.625A。当它们串联时L功率是额定的1/4，通过R电流为原来的1/3。求此时L实际功率。
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