Question

200j of heat is produced each second in 4 ohm resistor. Find the P.D. across resistor

Answer 1

Answer:40$\sqrt{2}$ V

Explanation:

We know: H=V^2t/R

    200=v^2(1)/4

    v^2=200*4

     v^2=800

     v= 40$\sqrt{2}$ V