During an investigation, a teacher places a small permanent magnet with a hole in it onto a wooden rod. The magnet can slide freely up and down the rod. When the teacher places the magnet and rod on a tabletop above an electromagnet, the magnet slides up the rod as shown in the diagram.

Question

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A student measures how far the magnet slides up the rod each time the teacher adds an additional battery to the electromagnet.

Which question could most likely be answered by this investigation?

Multiple choice question.

A)
How does the size of the magnet affect the distance the magnet travels up the rod?

B)
How does the distance between the magnet and the electromagnet affect the strength of the magnetic force of the electromagnet?

C)
How does the amount of the electric current affect the distance the magnet travels up the rod?

D)
How does the direction of the electric current affect the strength of the magnetic force of the electromagnet?

Answer 1

The investigation described focuses on how the number of batteries added to the electromagnet, which directly affects the electric current flowing through it, impacts the distance the magnet slides up the rod. Therefore, the question that could most likely be answered by this investigation is:

C) How does the amount of the electric current affect the distance the magnet travels up the rod?