A straight wire lying in a horizontal plane carries a current from north to south. - Noon Academy

A straight wire lying in a horizontal plane carries a current from north to south.

Class 10 | Electro Magnetism | ICSE | Physics | Selina

A straight wire lying in a horizontal plane carries a current from north to south.

(a) What will be the direction of the magnetic field at a point just underneath it?

(b) Name the law used to arrive at this answer in part (a).

Solution:

(a) At a position immediately beneath the surface, the magnetic field is oriented eastward.
(b) The right-hand thumb rule is the law’s name.

i

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