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Physics · JEE | Alternating Current

हिन्दी

A light bulb is rated at \( 100\text{ W} \) for a \( 220\text{ V} \) supply. The resistance of the bulb is approximately:

  1. A
    \( 220\text{ }\Omega \)
  2. B
    \( 484\text{ }\Omega \)
  3. C
    \( 100\text{ }\Omega \)
  4. D
    \( 968\text{ }\Omega \)
View Answer & Solution

Correct answer · Option B

\( 484\text{ }\Omega \)

Explanation

Using \( R = \frac{V^2}{P} = \frac{(220)^2}{100} = 484\text{ }\Omega \).
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