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In a tangent galvanometer a current of 0...

In a tangent galvanometer a current of `0.1 A` produces a deflection of `30^(@)`. The current required to produce a deflection of `60^(@)` is

A

`0.2A`

B

`0.3A`

C

`0.4A`

D

`0.5A`

Text Solution

Verified by Experts

The correct Answer is:
B
`i prop tan varphiimpliesi_(1)/i_(2)=(tan varphi_(1))/(tan varphi_(2))`
`implies0.1/i_(2)=(tan 30^(@))/(tan 60^(@))=1/3impliesi_(2)=0.3A`
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