Lenz's Law Video Lessons

Concept

# Problem: If a north pole moves toward the loop in the plane of the page, in what direction is the induced current?A. clockwiseB. counterclockwiseC. no induced current

###### FREE Expert Solution

Magnetic flux:

$\overline{){{\mathbf{\varphi }}}_{{\mathbf{B}}}{\mathbf{=}}{\mathbf{B}}{\mathbf{A}}{\mathbf{c}}{\mathbf{o}}{\mathbf{s}}{\mathbf{\theta }}}$ where θ is the angle between B and A.

In this problem, we are going to apply Lenz's law to get the direction of the induced current.

Lenz's law: The induced electric current flows in a direction such that the current opposes the change in magnetic flux inducing it.

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###### Problem Details

If a north pole moves toward the loop in the plane of the page, in what direction is the induced current?

A. clockwise

B. counterclockwise

C. no induced current

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Lenz's Law concept. You can view video lessons to learn Lenz's Law. Or if you need more Lenz's Law practice, you can also practice Lenz's Law practice problems.