`B_(1), B_2 and B_3` are the three identical bulbs connected to a battery of steady emf with key `K` closed. What happens to the brightness of the bulbs `B_(1)` and `B_(2)` when the key is opened? A. Brightness of the bulb `B_(1)` increases and that of `B_(2)` decreasesB. Brightness of the bulbs `B_(1)` and `B_(2)` increasesC. Brightness of the bulb `B_(1)` decreases and `B_(2)` increasesD. Brightness of the bulbs `B_(1)` and `B_(2)` decreases

`B_(1), B_2 and B_3` are the three identical bulbs connected to a batt

1.	`B_(1), B_2 and B_3` are the three identical bulbs connected to a battery of steady emf with key `K` closed. What happens to the brightness of the bulbs `B_(1)` and `B_(2)` when the key is opened? A. Brightness of the bulb `B_(1)` increases and that of `B_(2)` decreasesB. Brightness of the bulbs `B_(1)` and `B_(2)` increasesC. Brightness of the bulb `B_(1)` decreases and `B_(2)` increasesD. Brightness of the bulbs `B_(1)` and `B_(2)` decreases
Answer» Correct Answer - C

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