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Magnetic Field

A square fram...

Question

A square frame $P Q R S$ of side $20 c m$ , made up of a conducting wire is placed in a magnetic field of $1$ tesla as shown. The magnetic field is perpendicular to the plane of the frame directed upwards. An electric current of $2 A$ enters at the edge $P$ of the frame and exist from the edge $R$ . Find out the magnetic forces acting on the sides of the frame.

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Solution

$0.020 N$ on each side
Directed downwards on $P Q$ and $S R$ .

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