Question

A toroidal electromagnet has 1000 turns and mean radius of 0.1m . The magnetic core has a relative permeability of 2000. If a current of 1A is passed. Calculate the magnetic induction ​

Answer 1

Answer:

Given,

N=3000

r=10cm=0.1m

n=

2πr

N

μ

r

=2000

I=1A

For a solenoid magnetic field, B=μnI=μ

r

μ

0

nI

B=2000×4π×10

−7

×

2πr

N

×1

=2000×4×10

−7

×

2π×0.1

3000

×1=12T