用电器正常工作的条件:加在用电器两端的电压等于其额定电压;流过用电器的电流等于其额定电流;实际功率等于其额定功率.用电器工作时,只要满足上述条件中的—个,用电器就能正常工作,其它两个条件也会满足.用电器连入的电路若为纯电阻电路,一般认为其电阻不变(只要题目中不明确说明,就认为电阻不变,如灯泡、电炉等).因此,用电器两端的电压超过额定电压时,其 The conditions for the normal operation of the appliance: the voltage applied across the appliance is equal to its rated voltage; the current flowing through the appliance is equal to its rated current; the actual power is equal to its rated power. As long as one of the above conditions , The electrical can work normally, the other two conditions will be met.If the electrical circuit connected to a purely resistive circuit, the general that the resistance of the same (as long as the title is not clearly stated, that the resistance of the same, such as light bulbs , Electric furnace, etc.) Therefore, when the voltage across the appliance exceeds the rated voltage, it