CUET · PHYSICS · PYQ PAPER 2023
The instrument preferred for measuring the emf of a cell more accurately is :
- A Potentiometer
- B Meter bridge
- C Voltmeter
- D Wheatstone bridge
Answer & Solution
Correct Answer
(A) Potentiometer
Step-by-step Solution
Detailed explanation
A potentiometer is preferred because it works on the null deflection method, meaning it draws no current from the cell at the balance point, allowing it to measure the actual EMF. In contrast, a voltmeter has a finite resistance and always draws some current, measuring the…
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