WBCS.LIVE practice question

The resistance of a 200V−100W bulb is:

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 400
  2. 400 only when it is connected to 200 volt mains
  3. 400 when it is not glowing (d) 2
  4. None of these

Correct answer and explanation

Correct answer: 400 only when it is connected to 200 volt mains