NEET2021Physics-Current Electricity
NEET 2021 Physics Potentiometer MCQ Question
Type: MCQ-numerical-Easy-Class 12
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 ?
A
60 cm
B
21.6 cm
C
64 cm
D
62 cm
Correct Answer
Option A
Detailed Explanation
The balance length is directly proportional to the EMF of the cell. Thus, cm.
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