JEE Mains · Physics · STD 12 - 3. current electricity
In a meter bridge experiment, the circuit diagram and the corresponding observation table are shown in figure
| \(Sl\). \(No\). | \(R\, (\Omega )\) | \(l\, (cm)\) |
| \(1\). | \(1000\) | \(60\) |
| \(2\). | \(100\) | \(13\) |
| \(3\). | \(10\) | \(1.5\) |
| \(4\). | \(1\) | \(1.0\) |
- A \(4\)
- B \(3\)
- C \(2\)
- D \(1\)
Answer & Solution
Correct Answer
(A) \(4\)
Step-by-step Solution
Detailed explanation
as \(x=\frac{R(100-\ell)}{\ell}\) \(\text { for (1) } \quad x=\frac{1000 \times(100-60)}{40} \approx 667\) \(\text { for (2) } \quad x=\frac{100 \times(100-13)}{13} \approx 669\) \(\text { for }(\mathrm{3}) \quad x=\frac{10 \times(100-1.5)}{98.5} \approx 656\)…
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