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QNEET-2021-Ph-624: NEET 2021 Physics - Class 12 NEET-2021-Ph-624 Solution: In a potentiometer circuit a cell of EMF 1.5 V gives balance…
In a potentiometer circuit a cell of EMF 1.5 V gives balance point at 36 cm length of wire. If another cell of EMF 2.5 V replaces the first cell then at what length of the wire the balance point occurs? 62 cm 60 cm 21.6 cm 64 cm
Multiple Choice Options
- A 62 cm
- B 60 cm
- C 21.6 cm
- D 64 cm
Step-by-Step Verified Solution
_ = constant
E unknown = _ I b
_ E unknown _ I b
E 1 E 2 = I 1 I 2 _ 1.5 2.5 = 36 x
x = 36 _ 5 3 = 60 cm