一道关于高中物理选修3-1电流的题 急求高中物理选修3-1恒定电流的练习题
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2.\u6a2a\u622a\u9762\u79ef2\uff1a1\uff0c\u6240\u4ee5\u7535\u963b\u6bd41\uff1a2\uff0c\uff08\u7535\u8377\u91cf/\u65f6\u95f4\uff09 \u6bd4\u4e3a1\uff1a2\uff0cI=Q/t\uff0c\u6240\u4ee5\u7535\u6d41\u6bd41\uff1a2\uff0cB\u5bf9\u3002
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\u7b2c\u4e8c\u7ae0\u300a\u6052\u5b9a\u7535\u6d41\u300b\u7ec3\u4e60\u9898(\u4e8c)
1\u3001\u6211\u56fd\u5317\u4eac\u6b63\u8d1f\u7535\u5b50\u5bf9\u649e\u673a\u7684\u50a8\u5b58\u73af\u662f\u5468\u957f\u4e3a240m\u7684\u8fd1\u4f3c\u5706\u5f62\u8f68\u9053\uff0c\u5f53\u73af\u4e2d\u7684\u7535\u6d41\u662f10mA\u65f6(\u8bbe\u7535\u5b50\u7684\u901f\u5ea6\u662f3\u00d7107m/s)\uff0e\u5219\u5728\u6574\u4e2a\u73af\u4e2d\u8fd0\u884c\u7684\u7535\u5b50\u6570\u76ee\u4e3a(\u7535\u5b50\u7535\u91cfe=1.6\u00d710-19C) (. )
A\uff0e5\u00d71011 B\uff0e5\u00d71010 C\uff0e1\u00d7102 D\uff0e1\u00d7104
2\u3001\u5982\u4e0b\u56fe\u6240\u793a\u7535\u8def\u7528\u6765\u6d4b\u5b9a\u7535\u6c60\u7ec4\u7684\u7535\u52a8\u52bf\u548c\u5185\u7535\u963b\u3002\u5176\u4e2dV\u4e3a\u7535\u538b\u8868\uff08\u5176\u7535\u963b\u8db3\u591f\u5927\uff09\uff0c\u5b9a\u503c\u7535\u963bR=7.0\u03a9\u3002\u5728\u7535\u952e\u672a\u63a5\u901a\u65f6\uff0cV\u7684\u8bfb\u6570\u4e3a6.0V\uff1b\u63a5\u901a\u7535\u952e\u540e\uff0cV\u7684\u8bfb\u6570\u53d8\u4e3a5.6V\u3002\u90a3\u4e48\uff0c\u7535\u6c60\u7ec4\u7684\u7535\u52a8\u52bf\u548c\u5185\u7535\u963b\u5206\u522b\u7b49\u4e8e\uff08 \uff09
A\uff0e6.0V\uff0c0.5\u03a9 B\u30026.0V\uff0c1.25\u03a9
C\uff0e5.6V\uff0c1.25\u03a9 D\u30025.6V\uff0c0.5\u03a9
3\u3001\u5148\u540e\u6309\u56fe\u4e2d\uff081\uff09\u3001\uff082\uff09\u6240\u793a\u7535\u8def\u6d4b\u540c\u4e00\u672a\u77e5\u7535\u963b\u963b\u503cRx\uff0c\u5df2\u77e5\u4e24\u7535\u8def\u7684\u8def\u7aef\u7535\u538b\u6052\u5b9a\u4e0d\u53d8\uff0c\u82e5\u6309\u56fe\uff081\uff09\u6240\u793a\u7535\u8def\u6d4b\u5f97\u7535\u538b\u8868\u793a\u6570\u4e3a6V\uff0c\u7535\u6d41\u8868\u793a\u6570\u4e3a2mA\uff0c\u90a3\u4e48\u6309\u56fe\uff082\uff09\u6240\u793a\u7535\u8def\u6d4b\u5f97\u7684\u7ed3\u679c\u5e94\u6709\uff08 \uff09
A\uff0e\u7535\u538b\u8868\u793a\u6570\u4e3a6V\uff0c\u7535\u6d41\u8868\u793a\u6570\u4e3a2mA
B\uff0e\u7535\u538b\u8868\u793a\u6570\u4e3a6V\uff0c\u7535\u6d41\u8868\u793a\u6570\u5c0f\u4e8e2mA
C\uff0e\u7535\u538b\u8868\u793a\u6570\u5c0f\u4e8e6V\uff0c\u7535\u6d41\u8868\u793a\u6570\u5c0f\u4e8e2mA
D\uff0e\u7535\u538b\u8868\u793a\u6570\u5c0f\u4e8e6V\uff0c\u7535\u6d41\u8868\u793a\u6570\u5927\u4e8e2mA
4\u3001\u5982\u56fe\u6240\u793a\u7684\u7535\u8def\u4e2d\uff0c\u7535\u6e90\u7684\u7535\u52a8\u52bf\u6052\u5b9a\uff0c\u8981\u60f3\u4f7f\u706f\u6ce1\u53d8\u6697\uff0c\u53ef\u4ee5\uff08 \uff09
A\uff0e\u589e\u5927R1
B\uff0e\u51cf\u5c0fR1
C\uff0e\u589e\u5927R2
D\uff0e\u51cf\u5c0fR2
5\u3001\u5728\u56fe\u4e2d\u6240\u793a\u7684\u7535\u8def\u4e2d\uff0c\u5f53\u6ed1\u52a8\u53d8\u963b\u5668\u7684\u6ed1\u52a8\u89e6\u7247\u5411 b\u7aef\u79fb\u52a8\u65f6\uff1a\uff08 \uff09
A\uff0e\u4f0f\u7279\u8868 V\u548c\u5b89\u57f9\u8868A\u7684\u8bfb\u6570\u90fd\u51cf\u5c0f
B\uff0e\u4f0f\u7279\u8868V\u548c\u5b89\u57f9\u8868A\u7684\u8bfb\u6570\u90fd\u589e\u5927
c\uff0e\u4f0f\u7279\u8868V\u7684\u8bfb\u6570\u589e\u5927\uff0c\u5b89\u57f9\u8868A\u7684\u8bfb\u6570\u51cf\u5c0f
D\uff0e\u4f0f\u7279\u8868V\u7684\u8bfb\u6570\u51cf\u5c0f\uff0c\u5b89\u57f9\u8868A\u7684\u8bfb\u6570\u589e\u5927
6\u3001\u5982\u56fe\u6240\u793a\uff0cP\u662f\u4e00\u4e2a\u8868\u9762\u5747\u5300\u9540\u6709\u5f88\u8584\u7535\u70ed\u819c\u7684\u957f\u9676\u74f7\u7ba1\uff0c\u5176\u957f\u5ea6\u4e3aL\uff0c\u76f4\u5f84\u4e3aD\uff0c\u9540\u819c\u6750\u6599\u7684\u7535\u963b\u7387\u4e3a \uff0c\u819c\u7684\u539a\u5ea6\u4e3ad\uff0e\u7ba1\u4e24\u7aef\u6709\u5bfc\u7535\u91d1\u5c5e\u7b8dM\u3001N\uff0e\u73b0\u628a\u5b83\u63a5\u5165\u7535\u8def\u4e2d\uff0c\u6d4b\u5f97M\u3001N\u4e24\u7aef\u7535\u538b\u4e3aU\uff0c\u901a\u8fc7\u5b83\u7684\u7535\u6d41I\uff0e\u5219\u91d1\u5c5e\u819c\u7684\u7535\u963b\u7387\u7684\u503c\u4e3a( )
A\uff0eU/I B\u3002 C\u3002 D\u3002
7\u3001\u4e3a\u4e86\u6d4b\u91cf\u4e00\u4e2a\u6b27\u59c6\u8868\u7684\u5185\u90e8\u7535\u6e90\u7684\u7535\u52a8\u52bf\uff0c\u67d0\u540c\u5b66\u4eea\u5229\u7528\u63d0\u4f9b\u7ed9\u4ed6\u7684\u2014\u4e2a\u91cf\u7a0b\u6ee1\u8db3\u6d4b\u91cf\u8981\u6c42\u3001\u5185\u963b\u7ea6\u4e3a\u51e0\u5343\u6b27\u7684\u7535\u538b\u8868\u5b8c\u6210\u4e86\u6d4b\u91cf\u3002\u5df2\u77e5\u6b27\u59c6\u8868\u523b\u5ea6\u76d8\u4e2d\u592e\u523b\u5ea6\u503c\u4e3a\u201c20\u201d\uff0e
(1)\u8bf7\u5728\u56fe3\u201466\u4e2d\u7528\u5b9e\u7ebf\u628a\u4e24\u8868\u8fde\u63a5\u6210\u6d4b\u91cf\u7535\u8def\uff1b
(2)\u5b9e\u9a8c\u4e2d\u5e94\u628a\u6b27\u59c6\u8868\u9009\u62e9\u5f00\u5173\u8c03\u81f3 \u6321;
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8\u3001\u6211\u4eec\u90fd\u6709\u8fd9\u6837\u7684\u4f53\u9a8c\uff1a\u624b\u7535\u7b52\u91cc\u7684\u4e24\u8282\u5e72\u7535\u6c60\u7528\u4e45\u4e86\u4ee5\u540e, \u706f\u4e1d\u53d1\u7ea2\u3002\u8fd9\u5c31\u662f\u6211\u4eec\u5e38\u8bf4\u7684 \u201c\u7535\u6c60\u6ca1\u7535\u4e86\u201d\uff0e\u6709\u4eba\u4e3a\u4e86\u201c\u8282\u7ea6\u201d\uff0c\u5728\u624b\u7535\u7b52\u91cc\u88c5\u4e00\u8282\u65b0\u7535\u6c60\u548c\u4e00\u8282\u65e7\u7535\u6c60\u642d\u914d\u4f7f\u7528\uff0c\u4e3a\u4e86\u68c0\u9a8c\u6b64\u4eba\u7684\u505a\u6cd5\u662f\u5426\u5408\u7406\uff0c\u67d0\u540c\u5b66\u8bbe\u8ba1\u4e86\u4e0b\u9762\u7684\u5b9e\u9a8c\uff1a
(1)\u7528\u56fe10-12\u7532\u6240\u793a\u7684\u7535\u8def\u5206\u522b\u6d4b\u91cf\u65b0\u65e7\u7535\u6c60\u7684\u7535\u52a8\u52bf\u548c\u5185\u963b\uff0c\u5e76\u628a\u6d4b\u91cf\u7ed3\u679c\u63cf\u7ed8\u6210\u4e59\u56fe\u6240\u793a\u7684\u56fe\u50cf\u3002\u7531\u56fe\u50cf\u53ef\u77e5\uff1a\u65b0\u7535\u6c60\u7684\u7535\u52a8\u52bfEl= V\uff0c\u5185\u963br1= \u03a9\uff1b\u65e7\u7535\u6c60\u7684\u7535\u52a8\u52bfE2= V\uff0c\u5185\u963br2= \u03a9\uff0e
(2)\u5df2\u77e5\u5c0f\u706f\u6ce1\u4e0a\u6807\u6709\u201c3V 2W\u201d\uff0c\u82e5\u628a\u65b0\u65e7\u5e72\u7535\u6c60\u5404\u4e00\u8282\u4e32\u8054\u505a\u7535\u6e90\uff0c\u5219\u7535\u6e90\u7684\u6548\u7387\u03b7=
\uff0e(\u4fdd\u7559\u4e24\u4f4d\u6709\u6548\u6570\u5b57)
(3)\u4e0a\u5c0f\u9898\u4e2d\uff0c\u65b0\u3001\u65e7\u7535\u6c60\u63d0\u4f9b\u7684\u7535\u529f\u7387\u5206\u522b\u662f W\u548c W\uff1b\u65e7\u7535\u6c60\u672c\u8eab\u6240\u6d88\u8017\u7684\u7535\u529f\u7387\u662f W\uff1b\u5c0f\u706f\u6ce1\u5b9e\u9645\u6d88\u8017\u7684\u7535\u529f\u7387\u662f W\uff0e
(4)\u4f60\u8ba4\u4e3a\u65b0\u65e7\u7535\u6c60\u642d\u914d\u4f7f\u7528\u7684\u505a\u6cd5\u662f\u5426\u5408\u7406,\u7b80\u8ff0\u7406\u7531 \uff0e
9\u3001\u5982\u56fe\u7532\u7684\u9ed1\u7bb1\u4e0a\u6709\u4e09\u4e2a\u63a5\u7ebf\u67f1A\u3001B\u3001C\uff0c\u5f7c\u6b64\u95f4\u5206\u522b\u63a5\u6709\u4e00\u4e2a\u7535\u5b66\u5143\u4ef6\uff0c\u5b83\u4eec\u662f\u4e00\u4e2a\u4e8c\u6781\u7ba1\u548c\u4e24\u4e2a\u5b9a\u503c\u7535\u963bR1\u3001\u3001R2(R1=300 ,R2\uff1d200 )\uff0e\u4e8c\u6781\u7ba1\u5177\u6709\u5355\u5411\u5bfc\u7535\u6027\uff1a\u5f53\u7ed9\u4e8c\u6781\u7ba1\u52a0\u4e0a\u4e00\u5b9a\u7684\u6b63\u5411\u7535\u538b\u65f6,\u5b83\u7684\u7535\u963b\u503c\u5f88\u5c0f\uff0c\u53ef\u8ba4\u4e3a\u662f\u96f6\uff1b\u5f53\u7ed9\u4e8c\u6781\u7ba1\u52a0\u4e0a\u53cd\u5411\u7535\u538b\u65f6\uff0c\u5b83\u7684\u7535\u963b\u503c\u53d8\u5f97\u5f88\u5927\uff0c\u5c31\u50cf\u65ad\u5f00\u7684\u5f00\u5173\u4e00\u6837\u3002
\u67d0\u540c\u5b66\u7528\u591a\u7528\u7535\u8868(\u5982\u56fe\u4e59)\u53bb\u63a2\u7a76\u7bb1\u5185\u7535\u8def\u65f6\uff0c\u5f97\u5230\u5982\u4e0b\u6570\u636e\uff0e
\u5b9e\u9a8c\u6b21\u6570 \u9ed1\u8868\u7b14\u63a5 \u7ea2\u8868\u7b14\u63a5 \u6d4b\u91cf\u7684\u7ed3\u679c(\u5355\u4f4d: )
1 A B 0
2 B A 500
3 A C 120
4 C A 300
5 B C 200
6 C B 120
\u8bf7\u5728\u56fe\u4e2d\u753b\u51fa\u7bb1\u5185\u4e09\u4e2a\u7535\u5b66\u5143\u4ef6\u7684\u6b63\u786e\u63a5\u6cd5.
\u56fe\u7532 \u56fe\u4e59
10\u3001\u5728\u7528\u201c\u7535\u6d41\u8868\u548c\u7535\u538b\u8868\u6d4b\u5b9a\u7535\u6c60\u7684\u7535\u52a8\u52bf\u548c\u5185\u963b\u201d\u7684\u5b9e\u9a8c\u4e2d\u3002
(1)\u79fb\u52a8\u6ed1\u52a8\u53d8\u963b\u5668\u7684\u6ed1\u52a8\u5934\u5e94\u7279\u522b\u6ce8\u610f\u9632\u6b62 \u3002
(2)\u73b0\u5907\u6709\u4ee5\u4e0b\u5668\u6750\uff1a
A.\u5e72\u7535\u6c60l\u8282
B.\u6ed1\u52a8\u53d8\u963b\u5668(0\uff5e50\u03a9)
C.\u6ed1\u52a8\u53d8\u963b\u5668{0\uff5e1750\u03a9}
D.\u7535\u538b\u8868(0\uff5e3V)
E.\u7535\u538b\u8868(0\uff5e15V)
F.\u7535\u6d41(0\u20140.6 A)
G.\u7535\u6d41\u8868{0\u4e003 A}
\u5176\u4e2d\u6ed1\u52a8\u53d8\u963b\u5668\u5e94\u9009 \uff0c\u7535\u6d41\u8868\u5e94\u9009 ,\u7535\u538b\u8868\u5e94\u9009 \uff0e
(3)\u56fe\u4e59\u662f\u6839\u636e\u5b9e\u9a8c\u6570\u636e\u753b\u51fa\u7684U-I\u56fe\u8c61.\u7531\u6b64\u53ef\u77e5\u8fd9\u4e2a\u5e72\u7535\u6c60\u7684\u7535\u52a8\u52bfE= V\uff0c\u5185\u7535\u963br\uff1d \u03a9
11\u3001(11\u5206)\u591a\u7528\u7535\u8868\u662f\u7531\u4e00\u5757\u9ad8\u7075\u654f\u5ea6\u78c1\u7535\u5f0f\u7535\u6d41\u8868\u3001\u9009\u62e9\u5f00\u5173\u548c\u6d4b\u91cf\u7ebf\u8def\u7ec4\u6210\u7684\uff0c\u5176\u5916\u5f62\u5982\u4e0a\u56fe\u6240\u793a.\u5728\u7528\u591a\u7528\u7535\u8868\u6d4b\u91cf\u7535\u963b\u65f6,\u8981\u7528\u5230\u56fe\u4e2d\u7684\u9009\u62e9\u5f00\u5173K\u548cT\u3001S\u4e24\u4e2a\u90e8\u4ef6\u3002\u8bf7\u5728\u4e0b\u8ff0\u5b9e\u9a8c\u6b65\u9aa4\u4e2d\uff0c\u6839\u636e\u9898\u610f\u8981\u6c42\u586b\u7a7a\u3002
A.\u7528\u5c0f\u87ba\u4e1d\u5200\u65cb\u52a8\u90e8\u4ef6 \uff0c\u4f7f\u6307\u9488\u5bf9\u51c6\u7535\u6d41\u7684\u96f6\u523b\u7ebf\u3002
B.\u5c06\u201c\u7ea2\u201d\u3001\u201c\u9ed1\u201d\u8868\u7b14\u5206\u522b\u63d2\u5165\u201c+\u201d\u3001\u201c\u2014\u201d\u63d2\u5b54\u3002\u3001
C.\u5c06K\u65cb\u8f6c\u5230 \u6321\u201c\u00d7100"\u7684\u4f4d\u7f6e\u3002
D.\u5c06\u4e24\u8868\u7b14\u77ed\u63a5\uff0c\u65cb\u52a8\u90e8\u4ef6 \uff0c\u4f7f\u6307\u9488\u5bf9\u51c6\u7535\u963b\u7684\u96f6\u523b\u7ebf\u3002
E.\u5c06\u4e24\u8868\u7b14\u7684\u91d1\u5c5e\u90e8\u5206\u5206\u522b\u4e0e\u88ab\u6d4b\u7535\u963b\u7684\u4e24\u6839\u5f15\u7ebf\u76f8\u63a5\uff0c\u53d1\u73b0\u6307\u9488\u504f\u8f6c\u89d2\u5ea6\u8fc7\u5c0f\u3002
\u4e3a\u4e86\u5f97\u5230\u6bd4\u8f83\u51c6\u786e\u7684\u6d4b\u91cf\u7ed3\u679c\uff0c\u8fd8\u5e94\u8be5\u8fdb\u884c\u54ea\u4e9b\u64cd\u4f5c\uff1f
\u8bf7\u5c06\u5b9e\u9a8c\u6b65\u9aa4\u8865\u5145\u5b8c\u6574\u3002
F\uff0e \u3002
G\uff0e \u3002
H\uff0e \u3002
I\uff0e \u3002
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A.\u5f85\u6d4b\u7535\u538b\u8868\u3002
B.\u6ed1\u52a8\u53d8\u963b\u5668\uff1a\u6700\u5927\u963b\u503c1000\u03a9
C.\u6ed1\u52a8\u53d8\u963b\u5668\uff1a\u6700\u5927\u963b\u503c10\u03a9
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E.\u7535\u963b\u7bb1\uff1a\u6700\u5927\u963b\u503c99.9\u03a9\uff0c\u963b\u503c\u6700\u5c0f\u6539\u53d8\u91cf\u4e3a0.1\u03a9
F.\u7535\u6c60\u7ec4\uff1a\u7535\u52a8\u52bf\u7ea66V\uff0c\u5185\u963b\u53ef\u5ffd\u7565
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(1)\u8981\u4f7f\u7528\u672c\u65b9\u6cd5\u6d4b\u91cf\u5f97\u6bd4\u8f83\u7cbe\u786e\uff0c\u800c\u4e14\u4f7f\u7528\u4eea\u5668\u4e2a\u6570\u6700\u5c11\uff0c\u9664\u4e86\u7535\u6c60\u7ec4\u3001\u5bfc\u7ebf\u3001\u5f00\u5173\u548c\u5f85\u6d4b\u7535\u538b\u8868\u5916\uff0c\u8fd8\u5e94\u4ece\u63d0\u4f9b\u7684B\u3001C\u3001D\u3001E\u5668\u6750\u4e2d\u9009\u7528 (\u7528\u5668\u6750\u524d\u7684\u5e8f\u53f7\u5b57\u6bcd\u8868\u793a)\uff0e (2)\u5bf9\u4e8e\u7528\u4e0a\u8ff0\u65b9\u6cd5\u6d4b\u51fa\u7684\u7535\u538b\u8868\u5185\u963bRV\u7684\u6d4b\u91cf\u503cR\u6d4b\u548c\u771f\u5b9e\u503cR\u771f\u53ca\u6d4b\u91cf\u8bef\u5dee\uff0c\u4e0b\u5217\u8bf4\u6cd5\u4e2d\u6b63\u786e\u7684\u662f \u3002
A\uff0e R\u6d4b\uff1eR\u771f
B\uff0eR\u6d4b\uff1cR\u771f
C\uff0e\u82e5RV\u8d8a\u5927\uff0c\u6d4b\u91cf\u503cR\u6d4b\u76f8\u5bf9\u4e8e\u771f\u5b9e\u503cR\u771f\u7684\u8bef\u5dee\u5c31\u8d8a\u5927.
D. \u82e5Rv\u8d8a\u5927\uff0c\u6d4b\u91cf\u503cR\u6d4b\u76f8\u5bf9\u4e8e\u771f\u5b9e\u503cR\u771f\u7684\u8bef\u5dee\u5c31\u8d8a\u5c0f
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13\u3001\u592a\u9633\u80fd\u6c7d\u8f66\u662f\u5229\u7528\u592a\u9633\u80fd\u7535\u6c60\u5c06\u592a\u9633\u80fd\u76f4\u63a5\u8f6c\u5316\u4e3a\u7535\u80fd\uff0c\u518d\u5229\u7528\u7535\u52a8\u673a\u9a71\u52a8\u6c7d\u8f66\u7684\u4e00\u79cd\u65b0\u578b\u6c7d\u8f66\uff0c\u76ee\u524d\u6b63\u5904\u5728\u5b9e\u9a8c\u9636\u6bb5\uff0e\u5b9e\u9a8c\u8f66\u7684\u5f62\u72b6\u90fd\u6bd4\u8f83\u602a\uff0c\u6709\u4e00\u4e2a\u51e0\u4e4e\u5e03\u6ee1\u5168\u90e8\u8f66\u8eab\u7684\u592a\u9633\u80fd\u7535\u6c60\u677f\uff0c\u8fd8\u6709\u6d41\u7ebf\u578b\u7684\u5916\u5f62\uff0c\u4ec5\u6709\u7684\u4e00\u4f4d\u4e58\u5458(\u9a7e\u9a76\u5458)\u62e5\u6709\u7684\u7a7a\u95f4\u4e5f\u6781\u4e3a\u6709\u9650\uff0e\u4eca\u540e\u968f\u7740\u592a\u9633\u80fd\u7535\u6c60\u677f\u6548\u7387\u7684\u63d0\u9ad8\u548c\u8f7b\u578b\u9ad8\u5f3a\u5ea6\u7684\u8f66\u4f53\u6750\u6599\u7684\u51fa\u73b0\uff0c\u5b9e\u7528\u578b\u7684\u592a\u9633\u80fd\u6c7d\u8f66\u5fc5\u5c06\u4f1a\u51fa\u73b0\u5728\u6211\u4eec\u7684\u751f\u6d3b\u4e2d\uff0e\u67d0\u8f86\u5b9e\u9a8c\u8f66\uff0c\u5927\u9633\u80fd\u7535\u6c60\u677f\u7684\u603b\u9762\u79ef\u4e3a\uff0cS\uff1d8m2\uff0c\u7535\u6c60\u7ec4\u63d0\u4f9b\u7684\u7535\u538b\u4e3aU\uff1d120V\uff0c\u63d0\u4f9b\u7ed9\u7535\u52a8\u673a\u7684\u5de5\u4f5c\u7535\u6d41\u4e3aI\uff1d10A\uff0c\u7535\u52a8\u673a\u5185\u963b\u4e3aR\uff1d2 \uff0c\u592a\u9633\u5149\u7167\u5c04\u5230\u7535\u6c60\u677f\u4e0a\u5355\u4f4d\u9762\u79ef\u4e0a\u7684\u8f90\u5c04\u529f\u7387\u4e3aP\uff1d1 kW\uff0fm2\uff0c\u5df2\u77e5\u7535\u52a8\u673a\u7684\u6548\u7387\u4e3a \uff1d90%\uff0c\u5728\u6c34\u5e73\u8def\u9762\u884c\u9a76\u65f6\u8f66\u53d7\u7684\u963b\u529b\u4e3af\uff1d150N\uff0c\u90a3\u4e48\u8fd9\u8f86\u5b9e\u9a8c\u8f66\u5728\u8be5\u8def\u9762\u4e0a\u884c\u9a76\u7684\u6700\u5927\u901f\u5ea6\u5927\u5c0f\u662f \uff0c\u5b83\u6240\u7528\u7684\u592a\u9633\u80fd\u7535\u6c60\u677f\u7684\u6548\u7387 \uff0c\uff1d .
14\u3001\u4e00\u53f0\u7535\u98ce\u6247\u7684\u989d\u5b9a\u529f\u7387\u662f60W\uff0c\u5185\u7535\u963b\u4e3a2\u03a9\uff0c\u5f53\u5b83\u63a5\u5728220V\u7684\u7535\u538b\u4e0b\u6b63\u5e38\u8fd0\u8f6c\uff0c\u6c42\uff1a
(1)\u7535\u98ce\u6247\u6b63\u5e38\u8fd0\u8f6c\u65f6\uff0c\u901a\u8fc7\u5b83\u7684\u7535\u6d41\u5f3a\u5ea6\u591a\u5927?\u6bcf\u79d2\u949f\u6709\u591a\u5c11\u7535\u80fd\u8f6c\u5316\u4e3a\u673a\u68b0\u80fd?
(2)\u82e5\u63a5\u4e0a\u7535\u6e90\u540e\uff0c\u7535\u98ce\u6247\u56e0\u6545\u4e0d\u80fd\u8f6c\u52a8\uff0c\u8fd9\u65f6\u901a\u8fc7\u5b83\u7684\u7535\u6d41\u5f3a\u5ea6\u591a\u5927?\u7535\u98ce\u6247\u5b9e\u9645\u6d88\u8017
\u7684\u7535\u529f\u7387\u591a\u5927?
15\u3001\u5982\u56fe\u6240\u793a\u7684\u7535\u8def\uff0c\u7535\u963bR3 = 4\u03a9\uff0c\u7535\u6d41\u8868A\u548c\u7535\u538b\u8868V\u5747\u4e3a\u7406\u60f3\u7535\u8868\uff0e\u95ed\u5408\u5f00\u5173S\u540e\uff0c\u7535\u6d41\u8868\u793a\u6570\u4e3a0.75A\uff0c\u7535\u538b\u8868\u793a\u65702.0V\uff0e\u7531\u4e8e\u67d0\u79cd\u539f\u56e0\uff0c\u7535\u8def\u6709\u4e00\u53ea\u7535\u963b\u53d1\u751f\u65ad\u8def\u73b0\u8c61\uff0c\u4f7f\u7535\u6d41\u8868\u793a\u6570\u53d8\u4e3a0.8A\uff0c\u7535\u538b\u8868\u793a\u6570\u4e3a3.2V\uff0e\u8bd5\u56de\u7b54\u4e0b\u5217\u95ee\u9898\uff1a
(1) \u5206\u6790\u5224\u65ad\u54ea\u4e00\u4e2a\u7535\u963b\u53d1\u751f\u4e86\u65ad\u8def\uff0e
(2) \u6c42\u7535\u963bR1\u3001R2\u7684\u503c\uff0e
(3) \u6c42\u7535\u6e90\u7684\u7535\u52a8\u52bfE\u548c\u5185\u7535\u963br\uff0e
16\u3001\u5982\u56fe\u6240\u793a\uff0c\u56fe\u7ebfAB\u662f\u7535\u8def\u7684\u8def\u7aef\u7535\u538b\u968f\u7535\u6d41\u53d8\u5316\u7684\u5173\u7cfb\u56fe\u7ebf. OM\u662f\u540c\u4e00\u7535\u6e90\u5411\u56fa\u5b9a\u7535\u963bR\u4f9b\u7535\u65f6\uff0cR\u4e24\u7aef\u7684\u7535\u538b\u7535\u53d8\u5316\u7684\u56fe\u7ebf\uff0c\u7531\u56fe\u6c42\uff1a
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\uff084\uff09\u7535\u6e90\u7684\u6700\u5927\u8f93\u51fa\u529f\u7387.
17\u3001(10\u5206)\u5728\u5982\u56fe10-14\u6240\u793a\u7535\u8def\u4e2d\uff0c\u76f4\u6d41\u53d1\u7535\u673aE=250V\uff0cr=3\u03a9\uff0cR1=R2=1\u03a9\uff0c\u7535\u70ed\u5668\u7ec4\u4e2d\u88c5\u670950\u53ea\u5b8c\u5168\u76f8\u540c\u7684\u7535\u70ed\u5668\uff0c\u6bcf\u53ea\u7535\u70ed\u5668\u7684\u989d\u5b9a\u7535\u538b\u4e3a200V\uff0c\u989d\u5b9a\u529f\u7387\u4e3a1000W\uff0c\u5176\u4ed6\u7535\u963b\u4e0d\u8ba1\uff0c\u5e76\u4e14\u4e0d\u8ba1\u7535\u70ed\u5668\u7535\u963b\u968f\u6e29\u5ea6\u7684\u53d8\u5316\uff0e\u95ee\uff1a
(1) \u5f53\u63a5\u901a\u51e0\u53ea\u7535\u70ed\u5668\u65f6\uff0c\u5b9e\u9645\u4f7f\u7528\u7684\u7535\u70ed\u5668\u90fd\u80fd\u6b63\u5e38\u5de5\u4f5c?
(2) \u5f53\u63a5\u901a\u51e0\u53ea\u7535\u70ed\u5668\u65f6\uff0c\u53d1\u7535\u673a\u7684\u8f93\u51fa\u529f\u7387\u6700\u5927?
(3) \u5f53\u63a5\u901a\u51e0\u53ea\u7535\u70ed\u5668\u65f6\uff0c\u7535\u70ed\u5668\u7ec4\u52a0\u70ed\u7269\u4f53\u6700\u5feb?
(4) \u5f53\u63a5\u901a\u51e0\u53ea\u7535\u70ed\u5668\u65f6\uff0c\u7535\u963bRl\uff0cR2\u4e0a\u6d88\u8017\u7684\u529f\u7387\u6700\u5927?
(5)\u5f53\u63a5\u901a\u51e0\u53ea\u7535\u70ed\u5668\u65f6\uff0c\u5b9e\u9645\u4f7f\u7528\u7684\u6bcf\u53ea\u7535\u70ed\u5668\u4e2d\u7535\u6d41\u6700\u5927?
It按照定义是通过的总电荷 电子的电荷量为q 所以个数是It/q
根据公式Q=It，Q=nq,所以n=It/q
根据公式I=nesv，，，e代表电量，由Q=It，导出Q=nesvt，，Q/e=nvst，，即电子数目
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绛旓細瀹為獙瀹ゅ父鐢ㄧ數鍘嬭〃鏈変袱涓噺绋:鈶0锝3浼,姣忓皬鏍艰〃绀虹殑鐢靛帇鍊兼槸0.1浼; 鈶0锝15浼,姣忓皬鏍艰〃绀虹殑鐢靛帇鍊兼槸0.5浼. 鐔熻鐨勭數鍘嬪:鈶1鑺傚共鐢垫睜鐨勭數鍘1.5浼;鈶1鑺傞搮钃勭數姹犵數鍘嬫槸2浼;鈶㈠搴収鏄庣數鍘嬩负220浼;鈶ｅ畨鍏ㄧ數鍘嬫槸:涓嶉珮浜36浼;鈶ゅ伐涓氱數鍘380浼. 鍥, 鐢甸樆 鐢甸樆(R):琛ㄧず瀵间綋瀵圭數娴鐨勯樆纰嶄綔鐢.(瀵间綋濡傛灉瀵...
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绛旓細銆 #楂樹簩# 瀵艰銆戜汉鏁欑増閫変慨3-1绗竴绔犻潤鐢靛満绗4鑺傘婄數鍔胯兘鍜岀數鍔裤嬩竴鐩存槸楂樹簩瀛︾敓瀛︿範闅剧偣锛屾垜浠鎺屾彙濂借繖涓鑺傜殑鐭ヨ瘑鐐广備笅闈㈡槸 缁欏ぇ瀹跺甫鏉ョ殑楂樹腑鐗╃悊鐢靛娍鑳藉拰鐢靛娍鐭ヨ瘑鐐癸紝甯屾湜瀵逛綘鏈夊府鍔┿傞珮涓墿鐞嗙數鍔胯兘鍜岀數鍔跨煡璇嗙偣 涓銆佺數鍔垮樊锛氱數鍔垮樊绛変簬鐢靛満涓袱鐐圭數鍔跨殑宸笺傜數鍦轰腑鏌愮偣鐨勭數鍔匡紝灏辨槸璇ョ偣...
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