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प्रश्न
Three identical cells each of emf 'e' are connected in parallel to form a battery. What is the emf of the battery?
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उत्तर
In a parallel combination, emf of the battery = emf of each cell = e.
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संबंधित प्रश्न
Two students ‘X’ and ‘Y’ perform an experiment on potentiometer separately using the circuit given below:
Keeping other parameters unchanged, how will the position of the null point be affected if
(i) ‘X’ increases the value of resistance R in the set-up by keeping the key K1 closed and the Key K2 opens?
(ii) ‘Y’ decreases the value of resistance S in the set-up, while the key K2 remains open and they K1 closed?
Justify.
Would you prefer a voltmeter or a potentiometer to measure the emf of a battery?
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