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A semicircular wire of radius 5.0cm carries a current of 5.0A.

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A semicircular wire of radius 5.0cm carries a current of 5.0A. A magnetic field B of magnitude 0.50T exists along the perpendicular to the plane of the wire. Find the magnitude of the magnetic force acting on the wire.

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Best answer

Force on a semicircular wire

= 2iRB

= 2 × 5 × 0.05 × 0.5

= 0.25N

by (130 points)
The length of the wire is πR+R right ?
So according to the formula for force, the force should be BI(πR+R )?
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