Question

the plane of a circular coil is horizontal. It has 20 turns each of 8cm radius. A current of 1A flows through its which appears to be clockwise from a point vertically above it. Find the magnitude and direction of the magnetic field at the centre of the coil.​

Answer 1

Explaination

..here is the answer

.formula at centre B=u°iN/2R

..u°=4 pie ×10^-7.

i=1A

N=20

R=8×10^-2 metre

..

putting all value...

B=5pie×10^-5..

.

.direction right hand thumb rule..gives in -k^.