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A certain amount of current when flowing...

A certain amount of current when flowing in a properly set tangent galvanometer, produces a deflection of `45^(@)`. If the current be reduced by a factor of `sqrt(3)`, the deflection would:

A

Decrease by `30^(@)`

B

Decrease by `15 ^(@)`

C

Increases by `15^(@)`

D

Increases by `30^(@)`

Text Solution

Verified by Experts

`l prop tan 0 implies (1)/(1//sqrt3) = (tan 45^(@))/(tan theta) therefore theta = 30^(@)` Now ` 45^(@) -30^(@)=15^(@)`
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