Question

Find the power dissipated in 27 ohm resistor. If the potential difference across 4 ohm resistor is 20 volt?

Answer 1

Answer:

V = I.R

given, V = 20 V ,

R = 4 ohm

I = 20/4 = 5 A.......(1)

now,

power = I².R

putting the value of I from eqn .....(1)

P = 5×5×27 = 675 watt.