初三物理题
2014\u5e74\u521d\u4e09\u7269\u7406\u4e2d\u8003\u7535\u5b66\u90e8\u5206\u7ec3\u4e60\u9898\u53ca\u7b54\u6848\u4e13\u9898\u8bad\u7ec3\u4e8c\u7535\u5b66\u4e13\u9898
\u3000\u3000\u4e00\u3001\u586b\u7a7a\u9898(\u6bcf\u7a7a1\u5206\uff0c\u517115\u5206)
\u3000\u30001\uff0e\u4e00\u4e2a\u5bfc\u4f53\u4e24\u7aef\u52a04 V\u7535\u538b\u65f6\uff0c\u901a\u8fc7\u5b83\u7684\u7535\u6d41\u5f3a\u5ea6\u4e3a0.8 A\uff0c\u5f53\u628a\u5b83\u4e24\u7aef\u7535\u538b\u53d8\u4e3a6 V\u65f6\uff0c\u901a\u8fc7\u5b83\u7684\u7535\u6d41\u4e3a_______A\uff0c\u5b83\u7684\u7535\u963b\u4e3a_______ \uff0e
\u3000\u30002\uff0e\u5982\u56fe\u6240\u793a\u7684\u7535\u8def\u4e2d\uff0c\u5b9a\u503c\u7535\u963bR2\u4e3a10 \uff0c\u95ed\u5408\u5f00\u5173S \u524d\u540e\u5e72\u8def\u4e2d\u603b\u7535\u6d41\u7684\u6bd4\u4e3a2\u22363\uff0c\u5219R1\u7684\u963b\u503c\u4e3a_______\uff0e
\u3000\u30003\uff0e\u6807\u6709\u201c2.5 V\u3000 0.3 A\u201d\u7684\u5c0f\u706f\u6ce1\uff0c\u6b63\u5e38\u5de5\u4f5c1 min\u901a\u8fc7\u7684\u7535\u91cf\u4e3a_______\uff0c\u529f\u7387\u4e3a_______\uff0c\u4ea7\u751f\u7684\u70ed\u91cf\u4e3a_______\uff0e
\u3000\u30004\uff0e\u5982\u56fe\u6240\u793a\u7684\u7535\u8def\uff0c\u7528\u7535\u5668\u7684\u7535\u963bR0\uff1d30 \uff0c\u8981\u6c42\u901a\u8fc7\u5b83\u7684\u7535\u6d41\u80fd\u5728100\uff5e200 mA\u7684\u8303\u56f4\u5185\u53d8\u5316\uff0c\u9009\u7528\u7684\u7535\u6e90\u7535\u538b\u6700\u5c0f\u5e94\u4e3a_______V\uff0c\u7535\u8def\u4e2d\u6240\u7528\u6ed1\u52a8\u53d8\u963b\u5668\u7684\u963b\u503c\u53d8\u5316\u8303\u56f4\u5e94\u662f_______ \uff0e
\u3000\u30005\uff0e\u201c220 V 100 W\u201d\u7684\u7532\u706f\u548c\u201c220 V 40 W\u201d\u7684\u4e59\u706f\u76f8\u6bd4\u8f83\uff0c\u6b63\u5e38\u5de5\u4f5c\u65f6_______\u706f\u66f4\u4eae\uff0c_______\u706f\u7684\u7535\u963b\u5927\u4e00\u4e9b\uff0c_______\u706f\u7684\u706f\u4e1d\u7c97\u4e00\u4e9b\uff0e
\u3000\u30006\uff0e\u5982\u56fe\u6240\u793a\u7684\u5706\u73af\u662f\u7531\u963b\u503cR\u3001\u7c97\u7ec6\u5747\u5300\u7684\u91d1\u5c5e\u4e1d\u5236\u6210\u7684\uff0eA\u3001B\u3001C\u4e09\u70b9\u5c06\u5706\u73af\u5206\u6210\u4e09\u7b49\u4efd(\u6bcf\u7b49\u4efd\u7535\u963b\u4e3aR)\uff0c\u82e5\u5c06\u5176\u4e2d\u4efb\u610f\u4e24\u70b9\u8fde\u5165\u7535\u8def\uff0c\u5219\u8fde\u5165\u7535\u8def\u7684\u7535\u963b\u503c\u4e3a_________\uff0e
\u3000\u30007\uff0e\u5982\u56fe\u6240\u793a\u7535\u8def\u4e2d\uff0c\u7535\u6e90\u7535\u538b\u4fdd\u6301\u4e0d\u53d8\uff0c\u5f53\u6ed1\u52a8\u53d8\u963b\u5668\u7684\u6ed1\u7247P\u7531\u4e2d\u70b9\u5411\u53f3\u7aef\u79fb\u52a8\u7684\u8fc7\u7a0b\u4e2d\uff0c\u7535\u6d41\u8868\u7684\u793a\u6570\u5c06_______\uff0c\u706f\u6ce1L\u6d88\u8017\u7684\u7535\u529f\u7387\u5c06_______\uff0c\u53d8\u963b\u5668R\u4e0a\u6d88\u8017\u7684\u7535\u529f\u7387\u5c06_______(\u9009\u586b\u201c\u53d8\u5927\u201d\u201c\u53d8\u5c0f\u201d\u6216\u201c\u4e0d\u53d8\u201d)
\u3000\u3000\u4e8c\u3001\u9009\u62e9\u9898(\u6bcf\u98983\u5206\uff0c\u517145\u5206)
\u3000\u30008\uff0e\u963b\u503c\u4e3a3 \u4e0e6 \u7684\u7535\u963b\uff0c\u5c06\u5b83\u4eec\u4e32\u8054\uff0c\u5176\u603b\u7535\u963b\u4e3aR1\uff1b\u5c06\u5b83\u4eec\u5e76\u8054\uff0c\u5176\u603b\u7535\u963b\u4e3aR2\uff0c\u5219R1\u2236R2\u7b49\u4e8e(\u3000)
\u3000\u3000A\uff0e2\u22361 B\uff0e1\u22362 C\uff0e2\u22369 D\uff0e9\u22362
\u3000\u30009\uff0e\u5982\u56fe\u6240\u793a\u7684\u7535\u8def\u4e2d\uff0c\u7535\u6e90\u7535\u538b\u4e0d\u53d8\uff0c\u95ed\u5408\u5f00\u5173S\u540e\uff0c\u706fL1\u3001L2\u90fd\u53d1\u5149\uff0c\u4e00\u6bb5\u65f6\u95f4\u540e\uff0c\u5176\u4e2d\u4e00\u706f\u7a81\u7136\u7184\u706d\uff0c\u800c\u7535\u6d41\u8868\u3001\u7535\u538b\u8868\u7684\u793a\u6570\u90fd\u4e0d\u53d8\uff0c\u5219\u4ea7\u751f\u8fd9\u4e00\u73b0\u8c61\u7684\u539f\u56e0\u662f(\u3000)
\u3000\u3000A\uff0e\u706fL1\u77ed\u8def B\uff0e\u706fL2\u77ed\u8def \u3000\u3000 C\uff0e\u706fL1\u65ad\u8def D\uff0e\u706fL2\u65ad\u8def
\u3000\u300010\uff0e\u5982\u56fe\u6240\u793a\uff0cV1\u548cV2\u662f\u5b8c\u5168\u76f8\u540c\u7684\u4e24\u4e2a\u7535\u538b\u8868\uff0c\u90fd\u67093 V\u548c15 V\u4e24\u4e2a\u91cf\u7a0b\uff0c\u95ed\u5408\u5f00\u5173\u540e\uff0c\u53d1\u73b0\u4e24\u4e2a\u7535\u538b\u8868\u504f\u8f6c\u7684\u89d2\u5ea6\u76f8\u540c\uff0c\u5219(\u3000)
\u3000\u3000A\uff0eR1\u2236R2\uff1d1\u22364 B\uff0eR1\u2236R2\uff1d4\u22361 \u3000\u3000C\uff0eR1\u2236R2\uff1d1\u22365 D\uff0eR1\u2236R2\uff1d5\u22361
\u3000\u300011\uff0e\u5c06\u4e24\u53ea\u6ed1\u52a8\u53d8\u963b\u5668\u6309\u56fe\u6240\u793a\u7684\u65b9\u6cd5\u8fde\u63a5\uff0c\u5982\u679c\u628aa \u3001b\u4e24\u6839\u5bfc\u7ebf\u63a5\u5165\u7535\u8def\u91cc\uff0c\u8981\u4f7f\u8fd9\u4e24\u53ea\u53d8\u963b\u5668\u63a5\u5165\u7535\u8def\u4e2d\u7684\u603b\u7535\u963b\u6700\u5927\uff0c\u5e94\u628a\u6ed1\u7247P1\u3001P2\u653e\u5728(\u3000)
\u3000\u3000A\uff0eP1\u653e\u5728\u6700\u53f3\u7aef\uff0cP2\u653e\u5728\u6700\u53f3\u7aef\u3000\u3000 B\uff0eP1\u653e\u5728\u6700\u5de6\u7aef\uff0cP2\u653e\u5728\u6700\u5de6\u7aef
\u3000\u3000C\uff0eP1\u653e\u5728\u6700\u53f3\u7aef\uff0cP2\u653e\u5728\u6700\u5de6\u7aef \u3000\u3000D\uff0eP1\u653e\u5728\u6700\u5de6\u7aef\uff0cP2\u653e\u5728\u6700\u53f3\u7aef
\u3000\u300012\uff0e\u5728\u56fe\u6240\u793a\u7684\u7535\u8def\u4e2d\uff0c\u7535\u6e90\u7535\u538b\u4fdd\u6301\u4e0d\u53d8\uff0c\u5f53\u5f00\u5173S\u95ed\u5408\uff0c\u6ed1\u52a8\u53d8\u963b\u5668\u7684\u6ed1\u7247P\u5411\u53f3\u79fb\u52a8\u65f6\uff0c\u7535\u6d41\u8868\u548c\u7535\u538b\u8868\u7684\u793a\u6570\u7684\u53d8\u5316\u60c5\u51b5\u5206\u522b\u4e3a(\u3000)
\u3000\u3000A\uff0e\u7535\u6d41\u8868\u7684\u793a\u6570\u53d8\u5c0f\uff0c\u7535\u538b\u8868\u7684\u793a\u6570\u53d8\u5927\u3000\u3000 B\uff0e\u7535\u6d41\u8868\u7684\u793a\u6570\u53d8\u5927\uff0c\u7535\u538b\u8868\u7684\u793a\u6570\u53d8\u5c0f
\u3000\u3000C\uff0e\u7535\u6d41\u8868\u7684\u793a\u6570\u53d8\u5c0f\uff0c\u7535\u538b\u8868\u7684\u793a\u6570\u4e0d\u53d8\u3000\u3000 D\uff0e\u7535\u6d41\u8868\u7684\u793a\u6570\u53d8\u5c0f\uff0c\u7535\u538b\u8868\u7684\u793a\u6570\u53d8\u5c0f
\u3000\u300013\uff0e\u5982\u56fe\u6240\u793a\uff0c\u4e0b\u5217\u5224\u65ad\u9519\u8bef\u7684\u662f(\u3000)
\u3000\u3000A\uff0e\u4ec5\u4f7f\u706fL1\u5de5\u4f5c\uff0c\u5e94\u95ed\u5408\u5f00\u5173S2\u3001S3 \u3000\u3000B\uff0e\u4ec5\u4f7f\u706fL2\u5de5\u4f5c\uff0c\u5e94\u95ed\u5408\u5f00\u5173S1\u3001S3
\u3000\u3000C\uff0e\u4f7f\u706fL1\u5de5\u4f5c\uff0c\u5e94\u95ed\u5408\u5f00\u5173S1\u3001S3 \u3000\u3000D\uff0e\u4f7f\u706fL2\u5de5\u4f5c\uff0c\u53ea\u95ed\u5408\u5f00\u5173S3\u4e5f\u53ef
\u3000\u300014\uff0e\u5982\u56fe\u6240\u793a\uff0c\u7535\u78c1\u94c1P\u548cQ\u901a\u7535\u540e(\u3000)
\u3000\u3000A\uff0eP\u7684\u53f3\u7aef\u662fN\u6781\uff0cQ\u7684\u5de6\u7aef\u662fS\u6781\uff0c\u5b83\u4eec\u76f8\u4e92\u5438\u5f15\u3000B\uff0eP\u7684\u53f3\u7aef\u662fS\u6781\uff0cQ\u7684\u5de6\u7aef\u662fN\u6781\uff0c\u5b83\u4eec\u76f8\u4e92\u5438\u5f15
\u3000\u3000C\uff0eP\u7684\u53f3\u7aef\u662fN\u6781\uff0cQ\u7684\u5de6\u7aef\u662fN\u6781\uff0c\u5b83\u4eec\u76f8\u4e92\u6392\u65a5\u3000D\uff0eP\u7684\u53f3\u7aef\u662fS\u6781\uff0cQ\u7684\u5de6\u7aef\u662fS\u6781\uff0c\u5b83\u4eec\u76f8\u4e92\u6392\u65a5
\u3000\u300015\uff0e\u6709a\u3001b\u3001c\u3001d\u56db\u4e2a\u5e26\u7535\u4f53\uff0c\u5b83\u4eec\u4e4b\u95f4\u7684\u76f8\u4e92\u4f5c\u7528\u662f\uff1aa\u6392\u65a5c\uff0cb\u5438\u5f15c\uff0cb\u6392\u65a5d\uff0c\u7531\u6b64\u5224\u65ad(\u3000)
\u3000\u3000A\uff0ea\u3001d\u95f4\u76f8\u4e92\u6392\u65a5\u3000\u3000 B\uff0ea\u3001d\u95f4\u76f8\u4e92\u5438\u5f15\u3000\u3000 C\uff0ea\u4e00\u5b9a\u5e26\u6b63\u7535\u3000\u3000 D\uff0ed\u4e00\u5b9a\u5e26\u8d1f\u7535
\u3000\u300016\uff0e\u7528\u7c97\u7ec6\u5747\u5300\u7684\u7535\u70ed\u4e1d\u52a0\u70ed\u70e7\u6c34\uff0c\u901a\u753510 min\u53ef\u70e7\u5f00\u4e00\u58f6\u6c34\uff0c\u82e5\u5c06\u7535\u70ed\u4e1d\u5bf9\u6298\u8d77\u6765\u4f7f\u7528\uff0c\u7535\u6e90\u7535\u538b\u4e0d\u53d8\uff0c\u5219\u70e7\u5f00\u540c\u6837\u4e00\u58f6\u6c34\u7684\u65f6\u95f4\u662f(\u3000)
\u3000\u3000A\uff0e2.5 min B\uff0e5 min C\uff0e20 min D\uff0e30 min
\u3000\u300017\uff0e\u73b0\u6709\u4e00\u53ea\u201cPZ220\u201460\u201d\u706f\u6ce1L1\u548c\u4e00\u53ea\u201cPZ220\u201425\u201d\u706f\u6ce1L2\uff0c\u4e0b\u5217\u6709\u5173\u8bf4\u6cd5\u4e2d\u6b63\u786e\u7684\u662f(\u3000)
\u3000\u3000A\uff0e\u706f\u6ce1L1\u7684\u7535\u963b\u5c0f\u4e8e\u706f\u6ce1L2\u7684\u7535\u963b \u3000\u3000B\uff0e\u5b83\u4eec\u5e76\u8054\u5728\u7167\u660e\u7535\u8def\u4e2d\u65f6L2\u4eae
\u3000\u3000C\uff0e\u5b83\u4eec\u4e32\u8054\u5728\u7167\u660e\u7535\u8def\u4e2d\u65f6L1\u4eae \u3000\u3000D\uff0e\u5b83\u4eec\u6b63\u5e38\u53d1\u5149\u65f6\uff0c\u5728\u76f8\u540c\u65f6\u95f4\u5185\u6d88\u8017\u7684\u7535\u80fd\u76f8\u540c
\u3000\u300018\uff0e\u539f\u6765\u5ba4\u5185\u7684\u7535\u706f\u6b63\u5e38\u53d1\u5149\uff0c\u5f53\u628a\u53f0\u706f\u7684\u63d2\u5934\u63d2\u5165\u63d2\u5ea7\u65f6(\u53f0\u706f\u7684\u5f00\u5173\u65ad\u5f00)\uff0c\u5ba4\u5185\u7684\u706f\u5168\u90e8\u7184\u706d\uff0c\u7194\u4e1d\u7194\u65ad\uff0c\u53d1\u751f\u8fd9\u4e00\u73b0\u8c61\u7684\u539f\u56e0\u662f(\u3000)
\u3000\u3000A\uff0e\u53f0\u706f\u7684\u529f\u7387\u592a\u5927 \u3000\u3000B\uff0e\u53f0\u706f\u7684\u63d2\u5934\u5904\u6709\u77ed\u8def
\u3000\u3000C\uff0e\u53f0\u706f\u7684\u706f\u5ea7\u5904\u6709\u77ed\u8def D\uff0e\u63d2\u5ea7\u5904\u539f\u6765\u5c31\u6709\u77ed\u8def
\u3000\u300019\uff0e\u7535\u5de5\u4fee\u7406\u5982\u56fe\u6240\u793a\u7684\u7167\u660e\u7535\u8def\u65f6\uff0c\u53d1\u73b0\u7535\u706fR\u4e0d\u4eae\uff0c\u7528\u6d4b\u7535\u7b14\u6d4b\u8bd5C\u3001D\u540e\uff0c\u53d1\u73b0\u8fd9\u4e24\u5904\u90fd\u80fd\u4f7f\u6c16\u7ba1\u53d1\u5149\uff0c\u800c\u6d4b\u8bd5A\u3001B\u4e24\u70b9\u65f6\uff0c\u53ea\u6709A\u70b9\u6c16\u7ba1\u53d1\u5149\uff0c\u5219\u6545\u969c\u53ef\u80fd\u53d1\u751f\u5728(\u3000)
\u3000\u3000A\uff0eAC\u6bb5 B\uff0eCD\u6bb5 \u3000\u3000C\uff0e\u7535\u706fR\u77ed\u8def D\uff0eBD\u6bb5
\u3000\u300020\uff0e\u4e00\u4e2a\u901a\u7535\u87ba\u7ebf\u7ba1\u4e24\u7aef\u78c1\u6781\u7684\u6781\u6027\u51b3\u5b9a\u4e8e
\u3000\u3000A\uff0e\u87ba\u7ebf\u7ba1\u7684\u531d\u6570\u3000\u3000 B\uff0e\u901a\u8fc7\u87ba\u7ebf\u7ba1\u7684\u7535\u6d41\u65b9\u5411\u3000\u3000
C\uff0e\u87ba\u7ebf\u7ba1\u5185\u6709\u65e0\u94c1\u82af\u3000\u3000 D\uff0e\u901a\u8fc7\u87ba\u7ebf\u7ba1\u7684\u7535\u6d41
\u3000\u300021\uff0e\u95ed\u5408\u7535\u8def\u7684\u4e00\u90e8\u5206\u5bfc\u4f53\u5728\u78c1\u573a\u4e2d\u8fd0\u52a8\u7684\u65b9\u5411\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u56fe\u4e2d\u5c0f\u5706\u5708\u8868\u793a\u5bfc\u4f53\u7684\u6a2a\u622a\u9762\uff0c\u7bad\u5934\u8868\u793a\u5bfc\u4f53\u8fd0\u52a8\u7684\u65b9\u5411\uff0c\u4e0b\u5217\u5404\u56fe\u4e2d\u4e0d\u80fd\u4ea7\u751f\u611f\u5e94\u7535\u6d41\u7684\u662f(\u3000)
\u3000\u300022\uff0e\u5728\u5982\u56fe\u6240\u793a\u7684\u7535\u8def\u4e2d\uff0c\u7535\u6e90\u7535\u538b\u6052\u5b9a\uff0cR1\u4e3a\u4e00\u5b9a\u503c\u7535\u963b\uff0cR2\u4e3a\u6ed1\u52a8\u53d8\u963b\u5668\uff0e\u5f00\u5173S\u95ed\u5408\u540e\uff0c\u5f53\u6ed1\u52a8\u53d8\u963b\u5668\u7684\u6ed1\u7247P\u5728a\u3001b\u4e4b\u95f4\u6ed1\u52a8\u7684\u8fc7\u7a0b\u4e2d\uff0c\u7535\u538b\u8868\u7684\u793a\u6570\u6700\u5927\u4e3a4 V\uff0c\u7535\u963bR1\u7684\u7535\u529f\u7387\u53d8\u5316\u8303\u56f4\u662f0.8 W\uff5e7.2 W\uff0c\u5219P\u4ecea\u7aef\u6ed1\u81f3b\u7aef\u7684\u8fc7\u7a0b\u4e2d\uff0c\u7535\u6d41\u8868\u7684\u793a\u6570(\u3000)
\u3000\u3000A\uff0e\u4ece1.8 A\u53d8\u5316\u81f30.2 A\u3000\u3000 B\uff0e\u4ece0.4 A\u53d8\u5316\u81f31.2 A
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\u3000\u3000\u4e09\u3001\u4f5c\u56fe\u9898(\u6bcf\u98985\u5206\uff0c\u517115\u5206)
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\u3000\u3000\u56db\u3001\u5b9e\u9a8c\u9898(14\u5206)
\u3000\u300026\uff0e\u6d4b\u5b9a\u6807\u6709\u201c3.8 V\u201d\u706f\u6ce1\u7684\u989d\u5b9a\u529f\u7387\uff0e
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\u3000\u3000(2)\u7535\u538b\u8868\u6240\u9009\u91cf\u7a0b\u662f_______\uff0c\u8c03\u8282\u6ed1\u52a8\u53d8\u963b\u5668\uff0c\u5e94\u4f7f\u7535\u538b\u8868\u6307\u9488\u6307\u5728_______\u7684\u4f4d\u7f6e\u4e0a\uff0e(2\u5206)
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\u3000\u3000\u4e94\u3001\u8ba1\u7b97\u9898(11\u5206)
\u3000\u300027\uff0e\u67d0\u540c\u5b66\u5bb6\u7684\u7535\u7089\u94ed\u724c\u6a21\u7cca\u4e0d\u6e05\u4e86\uff0c\u4e3a\u4e86\u6d4b\u51fa\u7535\u7089\u7684\u989d\u5b9a\u529f\u7387\uff0c\u4ed6\u8ba9\u5bb6\u91cc\u7684\u6240\u6709\u7528\u7535\u5668\u90fd\u505c\u6b62\u5de5\u4f5c\uff0c\u53ea\u63a5\u5165\u7535\u7089\u8ba9\u5176\u6b63\u5e38\u5de5\u4f5c\uff0c\u7136\u540e\u89c2\u5bdf\u5bb6\u91cc\u6b63\u5728\u8fd0\u884c\u7684\u7535\u80fd\u8868\uff0c\u7535\u80fd\u8868\u4e0a\u6807\u6709\u201c3000 R/kWh\u201d\uff0c\u5229\u7528\u624b\u8868\u8ba1\u65f6\uff0c\u53d1\u73b01 min\u8f6c\u76d8\u8f6c\u4e8650\u8f6c\uff0c\u90a3\u4e48\uff1a
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\u3000\u30003\uff0e18 C\u3000 0.75 W\u3000 45 J
\u3000\u30004\uff0e6\u3000 0\uff5e30
\u3000\u30005\uff0e\u7532\u3000 \u4e59\u3000 \u7532
\u3000\u30006\uff0e2R/9
\u3000\u30007\uff0e\u53d8\u5c0f\u3000 \u4e0d\u53d8\u3000 \u53d8\u5c0f
\u3000\u30008\uff0eD\u3000 9\uff0eD\u3000 10\uff0eA\u3000 11\uff0eD\u3000 12\uff0eC\u3000 13\uff0eC\u3000 14\uff0eB\u3000 15\uff0eB\u3000 16\uff0eA\u3000 17\uff0eA\u3000 18\uff0eB\u3000 19\uff0eD\u3000 20\uff0eB\u3000 21\uff0eC\u3000 22\uff0eC
\u3000\u300023\uff0e\u7565\u3000 24\uff0e\u7565\u3000 25\uff0e\u7565
\u3000\u300026\uff0e(1)\u7565\u3000 (2)0\uff5e15 V\u3000 2.8 V\u3000 (3)0.34 A\u3000 1.3 W
\u3000\u300027\uff0e(1)1 kW
\u3000\u3000(2)\u56fe\u7565\u3000 \u5c06\u5f00\u5173\u4e0e\u5b9a\u503c\u7535\u963b\u5e76\u8054\u540e\u518d\u4e0e\u7535\u7089\u4e1d\u4e32\u8054\u3000 R\uff1d48.4
\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff0c\u6ee1\u610f\u8bf7\u91c7\u7eb3\uff0c\u6709\u95ee\u9898\u6b22\u8fce\u8ffd\u95ee
你可以看看这个：
初三物理电路初探物理试卷二
免费试题下载:初三物理电路初探物理试卷二下载说明:未经本站明确许可,任何网站不得非法盗链及抄袭本站资源①下载后如需解压,建议使用[WinRAR 3.71]或更高版本解压本站试题。 ②如果您发现该试题不能下载,请通知管理员报错,谢谢! ③本资源...
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初三物理电路-中小学教育资源交流中心
妥甸中学初三物理电路、电流、电压单元测试题测试.doc 2006-11-11 初三物理电路故障的练习题.doc 2005-10-31 初三物理电路.swf 2005-08-06 初三物理电路.rar 2003-08-03 搜索更多: >> 搜索更多与初三物理电路 相关的资源 资源上传...
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初三物理电路和电路图练习题免费下载
物理试卷 化学试卷 历史试卷 地理试卷 生物试卷 科学试卷 综合试卷 小学语文试题库 七年级语文试题 您当前的位置:课件之家 -> 初三物理电路和电路图练习题免费下载 找到您需要的课件啦!本站所有课件高速免费下载,记得下次再来哦,课件之家...
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初三物理电路题 爱问知识人
物理 提问:swgljhh 级别:学弟 悬赏分:10分 回答数:4 浏览数:66 初三物理电路题 如附件图,R1为5欧姆,R和R2为10欧姆,AB间电压为10伏,求AB间的总电阻,请说明过程。 提问时间: 2006-12-31 21:56:29 评论1┆ 举报 最佳答案 此...
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初三物理电路和电路图练习题 - 台州市双语学校
测量的初步知识、简单的运初三物理十四章机械能单元大气压强第二课时练习题大气压强练习题第二节 质量练习题第三节 ...立即下载“初三物理电路和电路图练习题” ⊙推荐使用迅雷下载本站资源,使用 WinRAR v3.60 以上版本解压本站资源。 ...
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http://image.baidu.com/i?tn=baiduimage&ct=201326592&lm=-1&cl=2&fm=ps&word=%B3%F5%C8%FD%B5%E7%C2%B7%CD%BC
百度图片上的
在图所示电路中，只闭合S1时，电灯 亮；当S1、S2都断开时，电灯 亮，它们是 连接的；当S1、S2都闭合时，电灯 亮，它们是 连接的．
www.xiaocao.net网站上有，自己看吧
串联和并联。
绛旓細涓.濉┖棰 1.鍔ㄨ兘鏄寚鐗╀綋鐢变簬 鑰屽叿鏈夌殑鑳斤紝鍏跺ぇ灏忎笌鐗╀綋鐨 鍜 鏈夊叧.2.鍔胯兘鍖呭惈 鍔胯兘鍜 鍔胯兘涓ょ.鐗╀綋鐢变簬琚妇楂樿屽叿鏈夌殑鑳藉彨鍋 鍔胯兘锛屽畠涓庣墿浣撶殑 鍜 鏈夊叧锛涚墿浣撶敱浜庡彂鐢 鑰屽叿鏈夌殑鑳藉彨鍋 鍔胯兘锛屽畠鐨勫ぇ灏忎笌 鏈夊叧.3.鎴戜滑甯哥敤鐨勮兘閲忓崟浣嶆槸 锛岀敤瀛楁瘝 鏉ヨ〃绀.4.鍒ゆ柇涓嬪垪鐗╀綋鏄惁鍏锋湁鍔ㄨ兘鎴栧娍鑳斤紝...
绛旓細锛1锛夌數鍔ㄦ満娑堣楃殑鐢佃兘锛歐锛漊It=3V x 0.5A x (10 x 60s)=900J 锛2锛変骇鐢熺殑鐑噺锛歈锛滻²Rt=(0.5A)² x 1惟 x (10 x 60s)=150J 锛3锛夊伐浣滄晥鐜囷細畏= 锛圵-Q锛/W锛濓紙900J锛150J锛壝900J锛83.3
绛旓細瑙ｏ細锛1锛夋湪鍧楃殑浣撶НV鏈=abc=0.4m脳0.2m脳0.1m=0.008m3=8dm3 鏈ㄥ潡婕傛诞鏃讹紝娴姏绛変簬鏈ㄥ潡鐨勯噸鍔涖侳娴=G鏈=蟻鏈╒鏈╣=610kg/m3脳0.008m3脳10N/kg=48.8N F娴=蟻姘碫鎺抔 鏈ㄥ潡娴稿叆姘翠腑鐨勪綋绉 V鎺=F娴/蟻姘磄 =48.8N/(1000kg/m3脳10N/kg)=0.00488m3 =4.88dm3 鏈ㄥ潡闇插嚭姘撮潰鐨勪綋绉...
绛旓細鍒ゆ柇鐨勬柟娉曟槸锛氱湅鐢靛帇琛ㄧ殑涓ょ鍒嗗埆浜庡摢涓厓鍣ㄤ欢鐨勪袱绔洿鎺ヨ繛缁撳湪涓璧凤紝鐢靛帇琛ㄦ祴鐨勫氨鏄繖閮ㄥ垎鍏冨櫒浠剁殑鐢靛帇銆傛樉鐒讹紝鏈涓殑鐢靛帇琛ㄧ殑涓ょ鏄拰鐢垫簮鐨勪袱绔敤瀵肩嚎鐩存帴杩炴帴鍦ㄤ竴璧风殑锛屽洜姝わ紝鐢靛帇琛ㄦ祴鐨勬槸鐢垫簮鐨勭數鍘嬨傚涓嬪浘绾㈣壊绾挎墍绀猴細褰撶劧锛屾崲涓涓搴︼紝鎶奓1銆丩2褰撴垚涓涓暣浣擄紝鐢靛帇琛ㄧ殑涓ょ涔熸槸鍜岃繖涓暣浣...
绛旓細鍒濅笁鐗╃悊娴嬭瘯棰 涓锛庨夋嫨棰橈細锛堟瘡绌2鍒嗭紝鍏36鍒嗭級1锛庣敺鍚屽涓鑸绘槸姣斿コ鍚屽鍙戝嚭鐨勫０闊虫矇闂枫佹祽鍘氾紝鍗抽煶璋冧竴鑸瘮濂冲悓瀛︾殑浣庛傚叾鍘熷洜鏄敺鍚屽澹板甫鎸姩鐨勯鐜囦笌濂冲悓瀛︾殑鐩告瘮锛堛 锛塧锛庤緝浣 b锛庤緝楂 c锛庝竴鏍 d锛庢椂楂樻椂浣 2锛庡湪闆风數鏉ヤ复鏃讹紝鐢靛厜涓闂嵆閫濓紝浣嗛浄澹板嵈闅嗛殕涓嶆柇锛岃繖鏄洜涓猴紙銆 锛塧...
绛旓細鈭撮杞1min杞姩2400鍛紝鍗抽杞1s杞姩40鍛紝瀵瑰鍋氬姛20娆 鈭1s鍋氬姛W=1950J脳20=39000J P=W/t=39000J/1s=39000W 2銆(1)V=54鍗=0.054m^3 m=蟻V=1.0脳10^3kg/m^3脳0.054m^3=54kg Q鍚=cm鈻硉=4.2脳10^3J/kg鈩兠54kg脳(43鈩-28鈩)=3.402脳10^6J 鈭礠鍚=50%Q鎬 鈭碤鎬=...
绛旓細绗竴棰閫佸垎浣犳诲綊鐭ラ亾鍚с傜浜岄锛屾槸鍚﹁秴閫熼棶鐨勬槸鏄惁锛氭苯杞﹂熷害>闄愰燂紝鍥犳灏辨槸锛氭眰姹借溅閫熷害銆傛牴鎹畍=s锛堝簲璇ユ槸杩欎釜瀛楁瘝鍚э紵鎴戝ソ涔呮病鐢ㄨ繃浜嗭級/t, v = 鈻硈 /鈻硉 = (s2 - s1)/(t2 - t1)= (68 - 32)/((15-45+60)/60) = 72km/h锛屽洜姝ゆ病鏈夎秴閫熴傜涓夐姹傚姛鐜囷紝P=W/t锛學=mq...
绛旓細7銆佸皬璺冲悓瀛︽瘡娆℃斁瀛﹀洖瀹惰鑳岀潃娌夐噸鐨勪功鍖呯埇涓婄害15m楂樼殑妤硷紝绱緱姘斿枠鍚佸悂銆傚皬璺冲悓瀛﹀拰涔﹀寘鎬婚噸600N锛岀埇妤肩敤鏃3min銆傛眰锛(1)灏忚烦鑳屼功鍖呯埇妤煎厠鏈嶉噸鍔涙墍鍋氱殑鍔燂紱(2)灏忚烦鐖ゼ鍏嬫湇閲嶅姏鍋氬姛鐨勫姛鐜囥8銆佷笂娴疯嚜涓荤爺鍙戜簡涓绉嶆阿鐕冩枡姹借溅锛屽畠浣跨敤姘㈡皵浠ｆ浛姹芥补銆傚湪涓娆℃祴璇曚腑锛屾苯杞﹀湪姘村钩璺潰鍙楀埌2400N鐨勬按骞...
绛旓細1銆佹煇涓涓哄鐢熶緵搴斿紑姘达紝鐢ㄩ攨鐐夊皢200kg姘翠粠25掳C鍔犵儹鍒100掳C锛岀噧鐑т簡6kg鐨勬棤鐑熺叅銆傛按鐨勬瘮鐑鏄4.2x10³J/銕.掳C锛屾棤鐑熺叅鐨勭儹鍊兼槸3.4x10鈭7J/銕忋傛眰锛氥傗憼閿呭唴鐨勬按鍚告敹鐨勭儹閲忔槸澶氬皯锛熲憽鏃犵儫鐓ゅ畬鍏ㄧ噧鐑ф斁鍑虹殑鐑噺鏄灏戯紵鈶㈡閿呯倝鐨勬晥鐜囨槸澶氬皯锛熷凡鐭ワ細m1=200kg锛宼o=25掳C锛宼=...
绛旓細寰堥毦鐨 50閬 鎴戜篃鏄鍒濅笁鍟 鎴戜滑鐗╃悊涔熸槸浜烘暀鐗 1銆佸湪鈥滄祴閲忓皬鐏场鐢甸樆鈥濆拰鈥滄祴灏忕伅娉″姛鐜団濓紙灏忕伅娉＄殑棰濆畾鐢靛帇涓2.5V锛変袱涓疄楠屼腑锛氾紙1锛夐兘闇瑕佹祴鍑轰笁缁勭數鍘嬪煎拰鐢垫祦鍊,鍓嶈呯殑鐩殑鏄痏__锛涘悗鑰呯殑鐩殑鏄痏__.锛2锛変笅琛ㄦ槸鏉庣儊鈥滄祴灏忕伅娉″姛鐜団濆疄楠屾椂璁板綍鐨勬暟鎹,鐢辨鍙煡灏忕伅娉＄殑棰濆畾鍔熺巼P棰=___...
