N identical cells are connected to form a battery. When the terminals of the battery are joined directly, current I flows in the circuit. To obtain maximum value of I |
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(a) |
all the cells should be joined in series |
(b) |
all the cells should be joined in parallel |
(c) |
two rows of N/2 cells each should be joined in parallel |
(d) |
|
N identical cells are connected to form a battery. When the terminals of the battery are joined directly, current I flows in the circuit. To obtain maximum value of I |
|||
(a) |
all the cells should be joined in series |
(b) |
all the cells should be joined in parallel |
(c) |
two rows of N/2 cells each should be joined in parallel |
(d) |
|
Incandescent bulbs are designed by keeping in mind that the resistance of their filament increases with the increase in temperature. If at room temperature 100 W, 60 W and 40 W bulbs have filament resistance R100, R60 and R40 respectively, then the relation between these resistance is |
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(a) |
|
(b) |
|
(c) |
|
(d) |
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