`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 bul

`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 bul
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`B_(1), B_2 and B_3` are the three identical bulbs connected to a battery of steady emf with key `K` ... of the bulbs `B_(1)` and `B_(2)` decreases
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