When a magnet is brought close to a wire, the magnetic field around the wire ___.
Changes
Remains constant
Goes to infinite
Becomes zero
When a magnet is brought close to a wire, the magnetic field around the wire increases.
When a magnet is brought close to a wire-loop, the magnetic field around the loop ____
Q3.when a magnet is bought close to a wire why the magnetic field around the wire increases?
Which instrument can be used to show that magnetic field exists around a wire carrying current? Why does a compass needle get deflected when brought near a bar magnet? [3 MARKS]