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Class 12 Physics Practice Test: Moving Coil Galvanometer
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A moving coil galvanometer works on the principle that a current-carrying coil placed in a magnetic field, experiences a torque.

Class 12 Physics Practice Test: Moving Coil Galvanometer
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15 Questions

1. What is moving coil galvanometer used for?
2. The current passing through a galvanometer is 30 mA, resistance of the galvanometer is 50 Ω and a shunt is 1 Ω is connected to the galvanometer. What is the maximum current that can be measured by this ammeter?
3. What should be the value of shunt resistance of the ammeter in order to increase its range?
4. What is the value of the shunt resistance (S) required if a galvanometer has a resistance f 50 Ω and a maximum of 0.05A current that can be passed through it? The ammeter range is changed to 20 A.
5. What should be the value of shunt resistance of the ammeter in order to increase its range?
6. Find the true statement.
7. How is galvanometer converted into a voltmeter?
8. An ideal ammeter has infinite resistance and an ideal voltmeter has zero resistance.
9. Find the true statement.
10. The current passing through a galvanometer is 30 mA, resistance of the galvanometer is 50 Ω and a shunt is 1 Ω is connected to the galvanometer. What is the maximum current that can be measured by this ammeter?
11. In a galvanometer 15% of the total current in the circuit passes through it. If the resistance of the galvanometer is G, then find out the shunt resistance S that is connected to the galvanometer.
12. When 0.010A current flows through a moving coil galvanometer, it gives full deflection. Then, it is converted into a voltmeter which gives a reading of 10 V using an external resistance of 950 Ω. What is the resistance of the galvanometer (G)?
13. Pick out the expression for galvanometer constant from the following?
14. What is moving coil galvanometer used for?
15. How is galvanometer converted into a voltmeter?

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