A single-turn circular loop of radius 23 cm is to produce a field at its center that will just cancel the earth's magnetic field at the equator, which is 0.7 g directed north.

Question

Physics

Bongo

8 May, 16:32

A single-turn circular loop of radius 23 cm is to produce a field at its center that will just cancel the earth's magnetic field at the equator, which is 0.7 g directed north.

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Lucia Malone · Answer 1

The loop is in the vertical plane and normal to the north direction. The current in the loop can be calculated with the equation : I=2BR,

where B is the direction (B=0.7G) and R is the radius,

So,

I=2*7*10^ (-5) x 0.1/4pi*1-^ (-7) Ampers