Daily Practice Problems

📝 SolutionLike poles (north-north or south-south) repel each other, while unlike poles attract.

📝 SolutionMagnetic monopoles do not exist; magnetic poles always occur in pairs (north and south).

📝 SolutionA freely suspended bar magnet aligns along the Earth's magnetic field, pointing roughly north-south.

📝 SolutionDiamagnetic substances are weakly repelled by a magnetic field, e.g. bismuth, copper.

📝 SolutionIron, cobalt and nickel are ferromagnetic, strongly attracted by magnets and able to become permanent magnets.