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Resistance of ammeter is ROmega. What wi...

Resistance of ammeter is `ROmega`. What will be the required shunt to decrease the value of passing current from 60 A to 20 A ?

A

`R/1`

B

`R/2`

C

`R/4`

D

`R/3`

Text Solution

Verified by Experts

The correct Answer is:
B
Ammeter range n = `60/20` = 3
`therefore` Shunt S = `R/(n-1)=R/(3-1)`
`thereforeS=R/2`
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