Question

When a current 2A flows through a circular coil of radius 5cm, a magnetic field intensity 12.56 x 10-4 tesla is generated at the centre. Calculate the number of tums in the coil.

Answer 1

Use the formula B=uoni/2a and further calculate

Explanation:

B=12.56*10^-4

I=2

A=5*5=25cm=0.25m