Describe the working principle of a moving coil galvanometer

Asked by admin @ 20/08/2021 in Physics viewed by 296 People

Describe the working principle of a moving coil galvanometer. Why it is necessary to use ( i ) a radical magnetic field ( ii ) a cylindrical soft iron core in a galvanometer ? Write the expression for current sensitivity of the Galvanometer.

Answered by admin @ 20/08/2021

in the radial field a cylindrical soft iron core should be used because the soft iron core helps to move more and more magnetic field line through it and a cylindrical magnet should also be used.

The resistance of a moving coil galvanometer is 20 ohm

Asked by admin @ 03/08/2021 in Physics viewed by 320 persons

the resistance of a moving coil galvanometer is 20ohm . it require 0.01A current for full scale deflection. Calculate the value of resistance require d to convert it into a …

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A galvanometer has a coil of resistance 100 ohm

Asked by admin @ 13/08/2021 in Science viewed by 282 persons

A galvanometer has a coil of resistance 100 ohm and gives a full scale deflection for 30 volt current

A galvanometer coil has a resistance of 15 ohm

Asked by admin @ 13/08/2021 in Physics viewed by 388 persons

Question 4.28: A galvanometer coil has a resistance of 15 Ω and the metre shows full scale deflection for a current of 4 mA. How will you convert the metre …

A galvanometer coil has a resistance of 12 ohm

Asked by admin @ 12/08/2021 in Physics viewed by 289 persons

a galvanometer coil has a resistance of 12 ohm and the meter shows full scale deflection of a current of 3mA. how will you convert the meter into voltmeter of …