NEET UG PHYSICS MCQ: MAGNETIC EFFECT OF CURRENT

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Application +4 | -1

The area of the coil in a moving coil galvanometer is 

15\,\,c{m^2}

and has 20 turns. The magnetic induction is 0.2 T and the couple per unit twist of the suspended wire is

{10^{ - 6}}\,Nm

per degree. If the deflection is

{45^0}

, the current passing through it is

View answer and explanation

Correct option: A

75 \times {10^{ - 4}}\,A

Option A (

75 \times {10^{ - 4}}\,A

) is correct because it's calculated by equating the deflecting torque to the restoring torque in the galvanometer.

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