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.

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Solution

Current, $I = 50 A$
Distance, $r = 2.5 m$
Magnetic field, $B = \frac{μ_{o} I}{2 π r}$
$B = 4.0 \times 10^{- 6} T$
According to maxwell's right hand, the direction of field is upward.

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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.

Current, I=50ADistance, r=2.5 mMagnetic field, B=μoI2πrB=4.0×10−6TAccording to maxwell's right hand, the direction of field is upward.

Current, $I = 50 A$
Distance, $r = 2.5 m$
Magnetic field, $B = \frac{μ_{o} I}{2 π r}$
$B = 4.0 \times 10^{- 6} T$
According to maxwell's right hand, the direction of field is upward.