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A 200 turn rectangular coil measuring 0....

A 200 turn rectangular coil measuring 0.02 m `xx` 0.08 m of an ammeter is in a magnetic field of induction 0.2 tesla. The torsional constant of the suspension fibre is `5 xx 10^(-7)` newton `xx` metre/degree. The maximum reading of the ammeter corresponds to a deflection of the coil through `45^(@)`. If the magnetic field is radial, then the maximum current that can be measured with this ammeter is

A

`3.5 xx 10^(-4)` A

B

`1.75 xx 10^(-4)` A

C

`7.0 xx 10^(-4)` A

D

`14.0 xx 10^(-4)` A

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The correct Answer is:
A
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TARGET PUBLICATION-MAGNETIC EFFECT OF ELECTRIC CURRENT-CRITICAL THINKING
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