Question

In a current carrying load solenoid, the field produced does not depend upon

• A. Number of turns per unit length
• B. Current flowing
• C. Radius of the solenoid
• D. All of the above three

Answer 1

Answer: (C)

Radius of the solenoid

The magnetic field at the center of solenoid is given as:

$B={\mu }_{0}ni$

where $n$ is number of turns per unit length $=\frac{N}{l}$

$i$ is the current through the solenoid.

So, the magnetic field does not depend on the radius of the solenoid.