Question:medium
If the ammeter A shows a zero reading in the circuit shown below, the value of resistance R is
If the ammeter A shows a zero reading in the circuit shown below, the value of resistance R is
Show Hint
In null-deflection or bridge-balancing problems, treat the branch with zero current as an open circuit to simplify the calculation of potential at the balancing nodes.
Updated On: May 6, 2026
- 500 \(\Omega\)
- 125 \(\Omega\)
- 100 \(\Omega\)
- 41.5 \(\Omega\)
- 4 \(\Omega\)
Show Solution
The Correct Option is B
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