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प्रश्न
Explain the significance of a radial magnetic field when a current-carrying coil is kept in it.
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उत्तर
The uniform radial magnetic field keeps the plane of the coil always parallel to the direction of the magnetic field. That is, the angle between the plane of the coil and the magnetic field is zero in all the orientation of the coil.
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संबंधित प्रश्न
Why is it necessary to introduce a cylindrical soft iron core inside the coil of a galvanometer?
Two moving coil meters, M1 and M2 have the following particulars:
R1 = 10 Ω, N1 = 30,
A1 = 3.6 × 10–3 m2, B1 = 0.25 T
R2 = 14 Ω, N2 = 42,
A2 = 1.8 × 10–3 m2, B2 = 0.50 T
(The spring constants are identical for the two meters).
Determine the ratio of
- current sensitivity and
- voltage sensitivity of M2 and M1.
The fraction of the total current passing through the galvanometer is ............ .
a) `S/(S+G)`
b) `G/(S+G)`
c) `(S+G)/G`
d) `(S+G)/S`
A moving coil galvanometer has a resistance of 25Ω and gives a full scale deflection for a current of 10mA. How will you convert it into a voltmeter having range 0 - 100 V?
Why is it necessary to introduce a radial magnetic field inside the coil of a galvanometer?
State the principle of the working of a moving coil galvanometer, giving its labeled diagram ?
What are the advantages of using soft iron as a core, instead of steel, in the coils of galvanometers?
The conversion of a moving coil galvanometer into a voltmeter is done by ______.
