Questions
A circular coil of radius 4 cm has 50 turns. In this coil a current of 2 A is flowing. It is placed in a magnetic field of 0.1 weber/. The amount of work done in rotating it through 180° from its equilibrium position will be
detailed solution
Correct option is A
magnetic moment due to a circular coil of n turns is M=niA and work done to rotate by 1800 will be MB1-Cos1800= 2MB W= 2 niπr2B =2x50 x 2xπx16x10-4x0.1= 0.1 JTalk to our academic expert!
Similar Questions
A circular loop has a radius of 5 cm and it is carrying a current of 0.1 A. Its magnetic moment is
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