Measuring Devices ( Galvanometer, Voltmeter and Ammeter & Meter Bridge )

Question 11: easy

Assertion (A): In a balanced Wheatstone bridge, the current through cell depends on resistance of galvanometer.

Reason (R): At balanced condition current through galvanometer is non-zero.

1. Both (A) & (R) are true and the (R) is the correct explanation of the (A)

2. Both (A) & (R) are true but the (R) is not the correct explanation of the (A)

3. (A) is true but (R) is false

4. Both (A) and (R) are false

View Answer

In a balanced Wheatstone bridge, the current through the galvanometer is zero. Hence, the galvanometer's resistance does not affect the equivalent resistance of the bridge and thus the current drawn from the cell. Both Assertion (A) and Reason (R) are false.

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