Which 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 of the following expressions gives the electrical power

P

dissipated in a resistor solely in terms of the potential difference

V

across it and its resistance

R

? (a)

P = \dfrac{V^{2}}{2R}

(b)

P = \dfrac{2V^{2}}{R}

(c)

P = \dfrac{V^{2}}{R}

(d)

P = \dfrac{V^{2}}{\sqrt{2}\,R}