Question
Physics Question on Current electricity
At the instant, when potentiometer is balanced, current
A
flows in primary circuit only
B
flows in secondary circuit only
C
flows both in primary and secondary circuits
D
does not flow in any circuit
Answer
flows in primary circuit only
Explanation
Solution
At the instant, when potentiometer is balanced current flows in primary circuit only to measure the potential drop across the wire. Battery in primary circuit creates a potential difference