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Three identical cells `E_(1), E_(2), E_(3)` and three identical bulbs `B_(1), B_(2), B_(3) ` are connected as shown in the circuit. (a) Find how `E_(1),E_(2),E_(3)` and `B_(1),B_(2),B_(3)` are con-nected, wheather in parallel or in series ? (b) Compare the brightness of the bulbs. |
| Answer» All the three cells are connected in series. `B_(1)` and `B_(2)` are in series where as `B_(3)` is in parallel connection. As `B_(1)` and `B_(2)` are connected in series, the brightness of them is same and is less than the brightness of `B_(3)`, which is connected across two cells. | |