Which one of the following expressions gives the electrical power dissipated in a…

PHYSICS · Single correct · AP · Physics 2: Algebra-based · Electric Circuits · Electric Circuits

Problem

Which one of the following expressions gives the electrical power dissipated in a resistor solely in terms of the current

I

through it and its resistance

R

? (a)

\dfrac{1}{2}\,I^{2} R

(b)

2 I^{2} R

(c)

I^{2} R

(d)

\sqrt{2}\, I^{2} R