Magnetic Forces

The video explains how magnetism is an invisible force caused by electron motion, leading to attraction and repulsion. Magnets have aligned electrons creating north and south poles, forming a magnetic field. Only certain materials, like iron, can form magnets. Earth itself is a giant magnet, enabling compass navigation. Magnets are crucial in technology, from motors to medical equipment.

What causes the magnetic force in magnets?

• The gravitational pull

• The motion of electrons

• The alignment of protons

• The presence of neutrons

What happens when two like poles of magnets are brought close to each other?

• They attract each other

• They repel each other

• They neutralize each other

• They create a spark

Which material is primarily used to make magnets?

• Gold

• Iron

• Aluminum

• Copper

How does Earth's magnetism assist in navigation?

• By creating a gravitational field

• By aligning with the sun

• By aligning compasses with its magnetic field

• By repelling other magnets

In which of the following is magnetism used to convert electricity into motion?

• Batteries

• Wind turbines

• Motors in electrical appliances

• Solar panels