37. In Fig, the magn
18. the magnetic needle has magnetic
moment .7*10- Am? and moment of inertia
7.5X10 kg ml. It performs 10 complete
Oscillations in 6.70 s. What is the magnitude of the
magnetic field?
1) 0.2 T
2) 0.05T
3) 0,08 T
4) 0.01T
Answers
Answered by
2
As we learnt,
Time period of oscillating Bar magnet -
Wherein,
I = moment of inertia = 7.5*10
M = magnetic moment = 7*10
T = time taken = 6.7
B = magnetic field = ?
Here π = 22/7
So, Option (D) is correct.
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