Drag the wire loop directly above the magnet. Click Forward and observe the wire loop and light bulb. As the magnet is moving, click the camera () icon to take a snapshot. Right-click the image, and click Copy Image. Paste this image into the document below.
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A. What do you notice in the wire?
The wire loop has current flowing through it when it is moved above the magnet.
B. How does the direction of the current in the loop compare to the electric field?
The direction of the current in the loop is perpendicular to the electric field created by the magnet.
Recall that the vectors in the electric field represent the forces on positive charges. Currents in wires are carried by moving electrons, which are negatively charged. Therefore, the electrons move in the opposite direction as the arrow on the wire.
C. Click Reverse. How does this affect the direction of the current?