An LED lamp is rated "15 W, 230 V"

PHYSICS · Single correct · A Level · Physics · Electricity · Electricity

Problem

An LED lamp is rated "15 W, 230 V". To calculate the current drawn by the lamp, which single relation would be the most convenient? (a)

V = IR

(b)

P = I^{2}R

(c)

P = VI

(d)

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