- 1(current)
Q. No.In the circuit shown in the figure below, the current supplied by the battery is:
1. \(2~\text A\)
2. \(1~\text A\)
3. \(0.5~\text A\)
4. \(0.4~\text A\)
Subtopic: Wheatstone Bridge |
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The value of \(R\) in the given circuit when there is no current in the \(5 ~\Omega\) resistor is:
| 1. | \(12~\Omega\) | 2. | \(9~ \Omega\) |
| 3. | \(3~ \Omega\) | 4. | \(2~ \Omega\) |
Subtopic: Wheatstone Bridge |
88%
From NCERT
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The effective resistance between points \(\mathrm{P}\) and \(\mathrm{Q}\) of the electrical circuit shown in the figure is:
1. \(\frac{2Rr}{R+r}\)
2. \(\frac{8R(R+r)}{3R+r}\)
3. \(2r+4R\)
4. \(\frac{5R}{2}+2r\)
1. \(\frac{2Rr}{R+r}\)
2. \(\frac{8R(R+r)}{3R+r}\)
3. \(2r+4R\)
4. \(\frac{5R}{2}+2r\)
Subtopic: Wheatstone Bridge |
86%
From NCERT
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The resistance of each arm of the Wheatstone’s bridge is \(10~\Omega.\) If a resistance of \(10~\Omega\) is connected in series with a galvanometer, then the equivalent resistance across the battery will be:
| 1. | \(10~\Omega\) | 2. | \(15~\Omega\) |
| 3. | \(20~\Omega\) | 4. | \(40~\Omega\) |
Subtopic: Wheatstone Bridge |
74%
From NCERT
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- 1(current)
Q. No.
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