2021 · Q20
An electric bulb is connected to a 110 V generator. The current is 0·2 A. What is the power of the bulb?
General KnowledgePhysics
- A0·22 W
- B2·2 W
- C22 W
- D220 W
Explanation
Electric power is given by P = V * I. With V = 110 V and I = 0.2 A, P = 110 x 0.2 = 22 W. The distractors come from decimal errors in the same multiplication.