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Best method to increase the sensitivity ...

Best method to increase the sensitivity of the moving coil galvanometer is to increase :

A

radius of the coil

B

number of turns of the coil

C

external magnetic field

D

none of the above.

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Define current sensitivity of a moving coil galvanometer.

Define current sensitivity of a moving coil galvanometer.

Knowledge Check

  • The sensitivity of moving coil galvanometer can be increased by using

    A
    A thicker supension
    B
    A thinner suspension
    C
    Both (a) & (b)
    D
    None of the above

  • Choose the wrong statement. The sensitivity of a mov-ing coil galvenometer can be increased by :

    A
    Increasing the number of turns in the coil
    B
    Inserting a soft iron cylinder inside the coil
    C
    Increasing the strength of the magnetic field
    D
    Using a suspcnsion fibrc of a higher restoring couple per unit twist .

  • In order to increase the sensitivity of galvanometer

    A
    The suspension wire should be made stiff
    B
    The magnetic field should be increased
    C
    Area of the coil should be reduced
    D
    The number of turns in the coil should be reduced

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    Statement - 1 . The sensitivity of a moving coil galvanometer in increased by placing a suitable material as a core inside the coil . Statement - 2 . Soft iron has a high magnetic permeability and cannot be easily magnetized or demagnetized .

    Statement - 1 : The senstivity of a moving coil galvanometer is increased by placing a suitable magnetic material as a core inside the coil . Statement - 2 : Soft iron has a high magnetic parmeability and connot be easily magnetized or demagnetized .

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