Questions
A magnetic needle having moment of inertia of has time period of 3 s in earth's horizontal field of . Its magnetic moment will be
detailed solution
Correct option is A
T=2πIMBHI=40 g cm2=400 x 10-8 kg m2∴3=2π400 x 10-836 x 10-6 x M⇒1M=94π2 x 364⇒M=0.5 A m2Talk to our academic expert!
Similar Questions
The time period of a freely suspended magnet is 4 seconds. If it is broken in length into two equal parts and one part is suspended in the same way, then its time period will be
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