Electricity and Magnetism Quiz

What is one similarity between electric force and magnetic force?

• Both are strongest far from the source.

• Both require direct contact to act.

• Both can act across a distance.

What happens when two like charges or poles are near each other?

• They attract each other.

• They repel each other.

• They combine to form a stronger charge.

What type of electricity builds up on an object?

• Current electricity

• Alternating electricity

• Static electricity

What causes lightning to occur?

• Magnetic fields in the air

• Sudden release of built-up electric charges in a cloud

• Movement of magnets in the atmosphere

Where is the magnetic force strongest on a magnet?

• At the center of the magnet

• Near the magnet's poles

• At the farthest point from the poles

What can you observe by sprinkling iron filings around a magnet?

• The speed of the magnetic force

• The electric charge of the magnet

• The shape of the magnetic field

How is an electromagnet different from a regular magnet?

• It only attracts metals like copper.

• Its strength depends on how it is built, and it can be turned off or on.

• It has no poles like a regular magnet.

What type of energy does electricity represent?

• Magnetic energy

• Potential energy

• A form of energy that travels through wires

What role does coal play in electricity generation?

• It conducts electricity directly.

• Burning coal can be used to produce electricity

• It attracts magnetic fields to generate electricity.