Physics-
General
Easy

Question

The circuit shown in figure consisting of three identical lamps and two coils is connected to a direct current source. The ohmic resistance of the coils is negligible. After some time switch S is opened. Which of the following statement(s) is/are correct for the instant immediately after opening the switch?

  1. All the lamps are turned off    
  2. Brightness of B2 & B3 remains unchanged    
  3. Brightness of B1 suddenly increases    
  4. Insufficient data to draw any conclusion.    

The correct answer is: Brightness of B2 & B3 remains unchanged

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