Mini-Quiz: Magnetic Force

1. What is the requirement on the magnetic poles for the simple force equation?

   They are only north seeking polesSorry, not correct. Try another button. They are quite largeGood try, but not right. Select another answer. They are considered points without areasThat is correct. You know about magnetic forces.

2. What happens to the force of repulsion when the magnet poles get closer?

   The force gets smallerOops! Wrong answer. Re-read the question and try again. The force increasesCorrect. You sure are smart. It is 4 times the other distanceSorry, not correct. Try another button.

3. How can the force equation apply to a magnet and iron nail?

   The nail becomes slightly magnetized, such that the equation appliesThat is correct. You know about magnetic forces. Magnets do not attract iron nails; they only repel themGood try, but not right. Select another answer. You need to know the size of the nailOops! Wrong answer. Re-read the question and try again.

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