A current in a solenoid with N turns creates a magnetic field at the center of that loop.The field strength is directly proportional to:
A)number of turns in the loop.
B)current strength.
C)Both choices A and B are valid.
D)None of the above are valid.

Question

Quizplus · Accepted Answer

The magnetic field strength is given by B = μ0IN / 2R, where μ0 is the permeability of free space, I is the current, N is the number of turns in the coil, and R is the radius of the coil. Thus, the magnetic field strength is directly proportional to both the current and the number of turns in the coil.

A Current in a Solenoid with N Turns Creates a Magnetic