Question

A group of students wanted to use a lab simulation to observe factors that affect the strength of electric and magnetic forces. To use the simulation shown the students could click on the magnet to move it.



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How could the students use this lab simulation to observe factors that affect electric and magnetic forces?

A.
Change the orientation of the magnet to produce a stronger force.

B.
Decrease the number of turns in the coil to change the direction of the voltage.

C.
Move the magnet in and out of the coil quickly and then slowly to observe a difference in the voltage produced.

D.
Increase the number of coils and then decrease the number of coils to observe a difference in the amount of voltage produced.

Answer 1

C

Moving the magnet faster changes the rate of change of magnetic flux through the coil, which (by Faraday’s law) produces a larger induced voltage; moving it more slowly produces a smaller voltage.