Question:
To increase the range of a voltmeter
To increase the range of a voltmeter
Updated On: Jan 18, 2023
- the series resistance must be removed
- a shunt must be used
- the series resistance must be increased
- the resistance of the voltmeter coil must be decreased.
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The Correct Option is C
Solution and Explanation
increase the series resistor.
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There are various electrical instruments used to measure current, power, voltage, etc. Some of them are briefly explained below:
Moving Coil Galvanometer
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- Its working principle is that whenever a current loop is placed in a magnetic field, it experiences a certain torque. The value of that torque can be modified by modifying the current in the loop.
- For a current carrying loop having N turns, and cross sectional area A, carrying current i, whenever it is placed in and along the direction of an external magnetic field B, it experiences a torque given by:
ԏ = NiAB
