Question

. A long solenoid having 1000 turns uniformly
distributed over a length of 0.5m produces a magnetic field of 2.5 milli tessla at the center.
Find the current in the solenoid.
​

Answer 1

Explanation:

Formula,

B=

l

μ

0

NI

2.25×10

−3

=

0.5

4π×10

−7

×500×I

I=

4π×10

−7

×500

0.5×2.25×10

−3

∴I=1.79≈1.8A