MHT CET Physics question
A 200 turn rectangular coil measuring m of an ammeter is in a magnetic field of induction 0.2 tesla. The torsional constant of the suspension fibre is newton metre/degree. The maximum reading of the ammeter corresponds to a deflection of the coil through . If the magnetic field is radial, then the maximum current that can be measured with this ammeter is
Answer: (A)
Solution
\dfrac{kθ}{nAB}\dfrac{5×10^{-7}×45}{200×(0.02×0.08)×0.2}10^{-4}$
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