A moving coil galvanometer gives full scale defection when a current of 0.05 A is passed through its coil it is converted in to a voltmeter reading up

Question

A moving coil galvanometer gives full scale defection when a current of 0.05 A is passed through its coil it is converted in to a voltmeter reading up

A moving coil galvanometer gives full scale defection when a current of 0.05 A is passed through its coil it is converted in to a voltmeter reading up to 5V by using an external resistance of 975 `omega` what is the resistance of the galvanometer coil ?
A. `30 Omega`
B. `25 Omega`
C. `50 Omega`
D. `40 Omega`

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - B
Here `i_(g)=0.005 A, V=500 V, R=965 omega , G=?`
we have `R=(V)/(i_(g))-G`
or the resistance of the gavanometer coil
`G=(V)/(i_(g))-R=(5)/(0.005)-975 =25 omega`

4 views Answered 2023-02-05 15:29