Question

Electrical circuit resistance of 2 ohm and 4 ohm respectively are connected in series to 6 volt watery the heat dissipated by the 4 ohm resistor in 5 second will be

Answer 1

Explanation:

Net resistence = 2ohm + 4ohm=6ohm

V =6 V

Therefore: current = V/R = 6V/6ohm= 1 A

Heat dissipated

H = l*l*R*t = 1*4*5 = 20J