Question

Magnetic field lines inside the solenoid shown are:

a.clockwise circles as one looks down the axis from the top of the page
b.counterclockwise circles as one looks down the axis from the top of the page
c.toward the top of the page
d.toward the bottom of the page
e.in no direction since B = 0

Answer 1

The magnetic field lines within a solenoid are straight and parallel to its axis, running from one end to the other, left to right, following the right-hand rule.

Step-by-step explanation:

The magnetic field inside a solenoid is uniform and its direction can be determined by using the right-hand rule. If you curl your fingers in the direction of the current flowing through the coils of the solenoid, your thumb will point in the direction of the magnetic field inside the solenoid. Therefore, inside the solenoid, the magnetic field lines do not form clockwise or counterclockwise circles, nor do they point toward the top or bottom of the page. The magnetic field lines are straight and run parallel to the axis of the solenoid from left to right (or from one end to the other), similar to the field lines of a bar magnet. The correct answer is that the magnetic field lines inside the solenoid go from left to right, which is not one of the provided options in the question.