Q. No.| 1. | Putting in parallel, a resistance of \(24~ \Omega\) |
| 2. | Putting in series, a resistance of \(15~ \Omega\) |
| 3. | Putting in series, a resistance of \(240~ \Omega\) |
| 4. | Putting in parallel, a resistance of \(15~ \Omega\) |
Choose the correct statement(s) from the options below:
| (a) | An ammeter should have small resistance. |
| (b) | An ammeter should have large resistance. |
| (c) | A voltmeter should have small resistance. |
| (d) | A voltmeter should have large resistance |
Which combination of statements is correct?
| 1. | (a) only | 2. | (b) and (c) only |
| 3. | (c) and (d) only | 4. | (a) and (d) only |
To convert a galvanometer into a voltmeter one should connect a:
| 1. | high resistance in series with the galvanometer. |
| 2. | low resistance in series with the galvanometer. |
| 3. | high resistance in parallel with the galvanometer. |
| 4. | low resistance in parallel with the galvanometer. |
1. \(0.1\%\)
2. \(10\%\)
3. \(25\%\)
4. \(0.25\%\)
| 1. | \(5~\text{mV}\) | 2. | \(0.05~\text{V}\) |
| 3. | \(5~\text{V}\) | 4. | \(50~\text{V}\) |
A millivoltmeter of \(25~\text{mV}\) range is to be converted into an ammeter of \(25~\text{A}\) range. The value (in ohm) of the necessary shunt will be:
1. \(0.001\)
2. \(0.01\)
3. \(1\)
4. \(0.05\)
A voltmeter of resistance \(2000~\Omega\) can measure a maximum potential difference of \(2~\text{V}.\) If it is to be converted into a voltmeter of range \(20~\text{V},\) the required resistance in series will be:
1. \(2000~\Omega\)
2. \(1800~\Omega\)
3. \(18000~\Omega\)
4. \(8000~\Omega\)
1. \(0.1~\text{A}\)
2. \(0.2~\text{A}\)
3. \(0.3~\text{A}\)
4. \(0.4~\text{A}\)
1. \(950~\Omega\) in series
2. \(950~\Omega\) in parallel
3. \(2.5~\Omega\) in series
4. \(2.5~\Omega\) in parallel
A galvanometer of \(50~\Omega\) resistance has \(25\) divisions. A current of \(4\times 10^{-4}~\text{A}\) gives a deflection of one division. To convert this galvanometer into a voltmeter having a range of \(25~\text{V}\), it should be connected with a resistance of:
| 1. | \(245~\Omega\) as a shunt |
| 2. | \(2550~\Omega\) in series |
| 3. | \(2450~\Omega\) in series |
| 4. | \(2500~\Omega\) as a shunt |
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