【物理参考答案】长沙市2025年新高考适应性考试
物理参考答案第1页(共4页)长沙市2025年新高考适应性考试物理参考答案选择题(一、二大题):共44分12345678910BBACDCCDADBDAC非选择题(第三大题):共56分。11.(6分)【答案】(1)0.45675(2)C12.(10分)【答案】(1)D见图答1(2)2.5(2.4-2.6均可)(3)PTCPTC型热敏电阻的阻值随温度升高而增大,当电路中的电流较小时,PTC热敏电阻的阻值较小,串联分得的电压较小;当电路中的电流较大时,PTC热敏电阻的阻值较大,串联分得的电压较大,使得其他元件两端的电压不至于过大,从而防止电流过大。【解析】(1)因为要求热敏电阻两端的电压从零开始逐渐...
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