A magnetic dipole of magnetic moment 6 10^-2 A m^2 and moment of inertia 12 10^-6 kg m^2 performs oscillations in a magnetic field of 2 10^-2 T. The time taken by the dipole to complete 20 oscillatio…

Question

A magnetic dipole of magnetic moment 6 10^-2 A m^2 and moment of inertia 12 10^-6 kg m^2 performs oscillations in a magnetic field of 2 10^-2 T. The time taken by the dipole to complete 20 oscillations is ( ≈3 )

Accepted Answer

Correct answer: B. (b) The magnetic field B is given as T=2 I mB Here; B=2 10^-2 T ,I=12 10^-6 kg m^2, m=6 10^-2 A m^2 Putting these values we get, T=2 12 10^-66 10^-2 2 10^-2= 2 3.1410 ≈0.6 s The time taken by the dipole to complete 20 oscillations =0.6 20=12 s

$A magnetic dipole of magnetic moment 6 \times 10^{- 2} A m^{2} and moment of inertia 12 \times 10^{- 6} kg m^{2} performs oscillations in a magnetic field of 2 \times 10^{- 2} T . The time taken by the dipole to complete 20 oscillations is (π \approx 3)$

Solution

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