如图甲所示为一个电灯两端的电压与通过它的电流变化关系曲线由图可知两者不成线性关系这是由于焦耳热使灯丝的温度�生了变化参考这条曲线回答 Template




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tomski如图甲所示为一个电灯两端的电压与通过它的电流变化关系曲线由图可知两者不成线性关系这是由于焦耳热使灯丝的温度�生了变化参考这条曲线回答 coloring