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无锡市普通高中2025年春学期高二期终调研考试试题
物理参考答案与评分标准
1 2 3 4 5 6 7 8 9 10
B D C A C A D B B B
11．（1）ACV·············································································（3
分）
（2）D·················································································（3
分）
（3）不同意。电键闭合时，原线圈磁通量变化，副线圈可以感应出电压
························································································（3
分）
12．（1）6.5···············································································（3
分）
（2） （或 ）···················（3
分）
13．（1）mv-Mv’=0·······································································（2
分）
········································································（1
分）
（2） ··················································（2
分）
所以 ··················································（1
分）
14．（1）设氧气瓶初始压强为P，体积为V；呼吸器充气完成后的压强为P，
1 1 2
体积为V。
2
PV=PV’······································································（2
2 2 1
分）
质量占比 ····················································（2
分）
（2）设可以分装n瓶
PV=nPV+PV （2
1 1 2 2 2 1··············································································································································
分）
n=45·············································································（2
分）
第 1 页 共 3 页
学科网（北京）股份有限公司15．（1）金属杆运动至MM 时的电动势E=BLv （1
1 0·························································
分）
回路中的总电阻R =2R·····································································（1
总
分）
回路中的电流强度大小为 ·······································（1
分）
金属杆运动至MM 时的安培力 ················（2
1
分）
（2）在整个过程中，根据能量守恒有
························································（2
分）
则在整个过程中，定值电阻R产生的热量为
···········································（2
分）
（3） 金属杆在MM NN 区域运动的过程中根据动量定理有
1 1
······················································（2
分）
则
由于 ，则上面方程左右两边累计求和，可得
·····················································（2
分）
则 ··························································（2
分）
16．（1）qE=ma··········································································（1
分）
·······································································（1
分）
····················································（2
分）
第 2 页 共 3 页
学科网（北京）股份有限公司（2） ·············································································（1
分）
2vtcos30°±s=2Rsin30°·······················································（2
1
分）
································································（1
分）
t=2t+t=2 ····························（2
1 2
分）
若 ，表达式只取+号(不讨论结果得全分)
（3）
········································································（2
分）
若满足：2vtcos30°=2Rsin30°·············································（1
1
分）
即 ，粒子能回到A点········································（1
分）
若2Rsin30°=n(2vtcos30°- 2Rsin30°) n=1,2,3……···············（1
1
分）
n=1,2,3，粒子也能回到A点·····················（1
分）
第 3 页 共 3 页
学科网（北京）股份有限公司
