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A straight wire carries a current of 6A ...

A straight wire carries a current of `6A` from south to north direction. What is the magnetic field due to `1cm` piece of wire at a point `50cm`, `30^@` east of north?

Text Solution

Verified by Experts

Here, `I=6A, dl=1cm=10^-2m`,
`theta=30^@, r=50cm=0.50cm`

`dB=(mu_0)/(4pi).(Idlsintheta)/(r^2)=10^-7xx(6xx10^-2xx sin 30^@)/((0.5)^2)`
`=1.2xx10^-8T`
The direction of magnetic field at point P is perpendicular to the plane of paper directed inwards.
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