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?
- All the lamps are turned off
- Brightness of B2 & B3 remains unchanged
- Brightness of B1 suddenly increases
- Insufficient data to draw any conclusion.
The correct answer is: Brightness of B2 & B3 remains unchanged
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