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一、填空题 1．由于电流的____效应,当电流通过电阻时会产生热量．一根60Ω的电阻丝接在36V的电源上,通过电阻丝的电流为____A,在10min内产生的热量为____J． 2．一只白炽灯泡上标有“220V 100W”字样,则该灯泡的灯丝电阻为____Ω．灯丝断了之后,重新将灯丝搭上,设灯丝电阻变为440Ω,通电后灯丝中的实际电流为____A,实际功率为____W,通电1min后, 灯丝实际消耗的电能为____J．(假设灯丝电阻不随温度改变) 3．电冰箱是间断式工作的(即工作一段时间停止一段时间,再工作
First, fill in the blank 1. Due to the ____ effect of the current, heat is generated when the current passes through the resistor. A 60Ω resistance wire is connected to the 36V power supply. The current through the resistance wire is ____A, and the heat generated in 10 min is ____J. 2. An incandescent bulb marked with “220V 100W” words, the lamp filament resistance is ____Ω. After the filament is broken, the filament is reattached, the filament resistance is set to 440Ω, the actual current in the filament is ____A, the actual power is ____W, and after the power is applied for 1min, the filament actually consumes ____J. (Assume that the filament resistance does not change with temperature) Refrigerators work intermittently (ie, work for a period of time and then stop working for a while