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. |
What properties will a galvanometer that is acting as a voltmeter have?
1. | high resistance in series with its coil | 2. | low resistance in parallel with its coil |
3. | low resistance in series with its coil | 4. | high resistance in parallel with its coil |
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 |