Question

Magnetic feild of a solenoid

Answer 1

Answer:

I think the question is to define magnetic field of solenoid.

Explanation:

The magnetic field inside a solenoid is proportional to both the applied current and the number of turns per unit length. There is no dependence on the diameter of the solenoid, and the field strength doesn't depend on the position inside the solenoid, i.e., the field inside is constant

Solenoid Magnetic Field Calculation

For a solenoid of length L = m with N = turns, the turn density is n=N/L= turns/m. B = Tesla = gauss. The Earth's magnetic field is about half a gauss.