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प्रश्न
Why is it necessary to introduce a radial magnetic field inside the coil of a galvanometer?
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उत्तर
A radial magnetic field is necessary so that plane of the coil in all positions remain parallel to the direction of magnetic field
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संबंधित प्रश्न
Increasing the current sensitivity of a galvanometer may not necessarily increase its voltage sensitivity. Explain, giving reason.
Can a galvanometer as such be used for measuring the current? Explain.
Define current sensitivity of a galvanometer.
Explain the significance of a radial magnetic field when a current-carrying coil is kept in it.
The coil of a moving coil galvanometer is wound over a metal frame in order to ______.
A galvanometer coil bas 500 turns and each tum has an average area of 3 × 10-4 m2. If a torque of 1.5 Nm is required to keep this coil parallel to a magnetic field when a current of 0.5 A is flowing through it, the strength of the field (in T) is ______.
A galvanometer having a resistance of 20 Ω and 30 Ω division on both sides has figure of merit 0.005 ampere/division. The resistance that should be connected in series such that it can be used as a voltmeter upto 15 volt, is ______.
How is current sensitivity increased?
