Electric work

Calculate the work done by the electric forces passing the current of 0.2 A through the bulb in 10 minutes if the bulb is connected to a 230 V power supply.

Correct result:

W =  27600 J

Solution:

I=0.2 A t=10 mins=10 60 s=600 s U=230 V  P=U I=230 0.2=46 W W=P t=46 600=27600 JI=0.2 \ \text{A} \ \\ t=10 \ min \rightarrow s=10 \cdot \ 60 \ s=600 \ s \ \\ U=230 \ \text{V} \ \\ \ \\ P=U \cdot \ I=230 \cdot \ 0.2=46 \ \text{W} \ \\ W=P \cdot \ t=46 \cdot \ 600=27600 \ \text{J}



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