Question: A 1 2 0 V potential difference is applied to a space heater whose resistance is 2 0 when hot. ( a ) At what

A 120 V potential difference is applied to a space heater whose resistance is 20 when hot. (a) At what rate is electrical energy transferred to thermal energy? (b) What is the cost for 5.1 h at US$0.05/kW-h?

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