When you double the number of windings in a solenoid keeping all other parameters (radius, length and current) fixed, the magnetic field at the center of the solenoid will
A) double.
B) triple.
C) quadruple.
D) be reduced to one-fourth as much.
E) be reduced to half as much.

Question

Quizplus · Accepted Answer

The magnetic field created by a solenoid is directly proportional to the number of windings, so doubling the number of windings will result in the magnetic field also doubling.

When You Double the Number of Windings in a Solenoid