Multiple choice

Electric current of a 100w, 220v electric bulb is _____.

  1. 2.2 A

  2. 1.1 A

  3. 0.45 A

  4. 0.22 A
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Using the power formula P = VI, current I = P/V = 100W/220V = 0.4545...A ≈ 0.45A. This is the standard calculation for finding current from power and voltage ratings. Option A (2.2A) would be P/V = 484W, option B (1.1A) would be 242W, and option D (0.22A) would be 48.4W - none match the 100W rating.

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