Which of the following expressions gives the electrical power dissipated by a…

PHYSICS · Single correct · CBSE · Physics · Electricity · Electricity

Problem

Which of the following expressions gives the electrical power dissipated by a resistor of resistance

R

carrying a current

I

? (a)

P = 2 I^{2}R

(b)

P = I^{2}R

(c)

P = \dfrac{1}{2} I^{2}R

(d)

P = \dfrac{I^{2}R}{\sqrt{2}}