Question

Relation between power, voltage and conductance

(a) V = P^2.G

(b) V = P^2/G

(c) P = v^2/G

(d) P = V^2 G

The question was posed to me during an internship interview.

I'm obligated to ask this question of Voltage and Current Sources ,Electrical Resistance topic in section Circuit Variables and Elements of Electric Circuits

Answer 1

The correct answer is (d) P = V^2 G

To elaborate: P = vi

                            = v (v/R)

                            = v^2/R

                            = v^2G.