The magnetic field inside a long ideal solenoid is independent of:
A)the current
B)the number of turns of wire
C)the spacing of the windings
D)the cross-sectional area
E)the direction of the current

Question

The magnetic field  inside a long ideal solenoid is independent of:
A)the current 
B)the number of turns of wire 
C)the spacing of the windings 
D)the cross-sectional area 
E)the direction of the current

Quizplus · Accepted Answer

The magnetic field inside a long ideal solenoid only depends on the number of turns of wire per unit length (which is equivalent to the density of turns), the current flowing through the wire, and the permeability of the medium inside the solenoid. It does not depend on the cross-sectional area or the spacing of the windings.

The Magnetic Field Inside a Long Ideal Solenoid Is