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Gourang made an electric circuit with three bulbs B_(1), B_(2) and B_(3) a cell and two switches S_(1) and S_(2) as shown in figure. He notes his observation when (a) S_(1) is closed and S_(2) is open, (b) S_(2) is closed and S_(1) is open. He also found that a bulb whose failure made the circuit 'open' irrespective of the status of S_(1) and S_(2) . What are his observation. |
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Answer» SOLUTION :(a) If `S_(1)` is CLOSED and `S_(2)` is open, only `B_(1)` and `B_(2)` glow. (b) If `S_(2)` is closed and `S_(1)` is open, only `B_(1)` and `B_(3)` glow. If `B_(1)` fails the CIRCUIT becomes open, even ifboth `S_(1)` and `S_(2)` are closed. |
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