Question 6
MagnetismA magnet is similar to a bipolar charged system in that
- A.it consists of two opposite poles – the north and south poles
- B.the earth's magnetic field has a south pole near the geographic north pole and a north pole near the geographic south pole
- C.the force of attraction and repulsion between opposite and between like poles obeys a law identical in form to Coulomb's law for electrostatic charges
- D.A and B only
- E.A and C only
Show the answer and explanation
Answer: E (A and C only)
Explanation
Like a pair of opposite charges, a magnet has two opposite poles, and the force between poles follows an inverse-square law of the same form as Coulomb's law. B is true about the earth but is not a likeness to a charged system.