Question

In the circuit, the cells are having negligible resistances. If the galvanometer shows null deflection, then the value of \( V \) is:

• A. 12 V
• B. 6 V
• C. 4 V
• D. 2 V

Hint:

In a balanced Wheatstone bridge, the ratio of the resistances gives the relationship for the unknown voltage.

Answer 1

The Correct Option is D

Using the principles of a balanced Wheatstone bridge, the ratio of the resistances leads to the determination of the voltage value, which comes out to be 2 V. Thus, the correct answer is option (4).