Question on: JAMB Physics - 2024
The value of R in the above circuit to make the galvanometer measure 2 A is
A
0.128 Ω
B
0.256 Ω
C
0.612 Ω
D
1.00 Ω
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Correct Option: B
Here's how to approach this problem:
- Understand the Circuit: The circuit appears to be a Wheatstone bridge. The galvanometer is in the middle branch.
- Wheatstone Bridge Balance Condition: For the galvanometer to measure 2 A, there must be a current through it, which means the bridge is not balanced.
- Analyze the Circuit: Since the galvanometer measures 2 A, the bridge is not balanced. More information is needed for the exact value of R. Assuming an ideal case, one of the given options can be taken as the solution.
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