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  • A particle is moving along a circle of radius R with a constant angular velocity . Point A lies in the same p

A particle is moving along a circle of radius R with a constant angular velocity \omega. Point A lies in the same plane at a distance 2R from the centre. The point records magnetic field produced by a particle. If the minimum time interval between two successive times at which records zero magnetic field is 't', the angular speed '\omega' in term of t is

Option: 1

\frac{2\pi}{t}


Option: 2

\frac{2\pi}{3t}


Option: 3

\frac{\pi}{3t}


Option: 4

\frac{\pi}{t}


Answers (1)

best_answer

'A' records zero magnetic field when a particle is moving on a line which passes through A which happen when tangent to path passes through A. Angle covered between two such points B and C \frac{2\pi}{3} as shown in figure, Time taken to go from B to C is given as

t=\frac{T}{3}=\frac{2 \pi}{\omega}\left(\frac{1}{3}\right) \Rightarrow \omega=\frac{2 \pi}{3 t}

Posted by

Suraj Bhandari

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