Question

a current flows in a wire of resistance 5ohm having potential difference 7 volt for 20 min the heat produced will be?​

Answer 1

Answer:

Heat = V^2 t/ R

H= 7^2 * 20* 60/ 5

H= 49* 4* 60

H= 11760 J

Answer 2

Answer:

heat produced = Vsquare /R(T) = 7×7×20/5=49×4 = 196