For a resistor of resistance carrying a steady current

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

Problem

For a resistor of resistance

R

carrying a steady current

I

, which one of the following expressions correctly gives the electrical power dissipated using only

I

and

R

? (a)

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

(b)

P = 2I^{2}R

(c)

P = I^{2}R

(d)

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