An electric current is measured by a tan...

An electric current is measured by a tangent galvonometer, the current being proportional to the tangent to the angle of deflection. If the deflection is read as `45^(@)` and an error of 1% is made in reading it, the percentage error in the current is

A

`pi`

B

`pi/2`

C

`pi/3`

D

`pi/4`

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Verified by Experts

The correct Answer is:

B

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