The diagram below shows a circuit containing a lamp L, a voltmeter and an ammeter. The voltmeter reading is 3 V and the ammeter reading is 0.5 A.

(i) What is the resistance of the lamp?

(ii) What is the power of the lamp?
(i) resistance = V/I = 3/0.5 = 6 Ω
(ii) P = VI = 3 × 0.5 = 1.5 Watt

Question

(i) resistance = V/I = 3/0.5 = 6 Ω

(ii) P = VI = 3 × 0.5 = 1.5 Watt

Philoid · Accepted Answer

(i) resistance = V/I = 3/0.5 = 6 Ω

(ii) P = VI = 3 × 0.5 = 1.5 Watt