Resistance 25021

Calculate the resistance and power of the appliance through which a current of 20mA flows at the mains voltage (230 V).

Correct answer:

P =  4.6 W
R =  11500 Ω

Step-by-step explanation:

U=230 V I=20 mA A=20:1000  A=0.02 A  P=U I=U 501=230 0.02=4.6 W
R=U/I=U/501=230/0.02=11500 Ω

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