bar magnet - Students Free Notes

What happens when a bar magnet is broken into two pieces?

Each piece becomes a smaller magnet with both a north and south pole, meaning monopoles cannot exist. Related Questions: Can two magnetic field lines intersect each other? Justify your answer. A freely suspended magnet always points along the north-south direction. Why? What is the neutral zone or field-free region of the magnetic field? Is there … Read more

Bar magnets are dropped in long pipes made up of plastic and copper (of the same length) simultaneously. The bar magnet comes out later through the copper pipe than through the plastic pipe. Why?

When the bar magnet moves through the copper pipe, it induces eddy currents in the pipe due to Faraday’s Law of Electromagnetic Induction. These eddy currents create a magnetic field that opposes the motion of the magnet, according to Lenz’s Law, causing the magnet to slow down. In contrast, the plastic pipe is a non-conductor … Read more