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A long straight wire in the horizontal p...

A long straight wire in the horizontal plane carries a current of 50 A in north to south direction. Give the magnitude and direction of B at a point 2.5 m east of the wire.

Text Solution

Verified by Experts

Given I = 50 A and r=2.5 m
The magnitude of magnetic field
`B=(mu_(0))/(4pi). (2I)/( r)=10^(-7)xx(2xx50)/(2.5)`
`=4xx10^(-6)T`
the direction of magnetic field at point P is given by Maxwell's right hand rule.
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