Magnetism Quiz

What is a magnetic field?

• A region in space where gravity can be detected.

• A region in space where electric charge can be detected.

• A region in space where a magnetic force can be detected.

• A region in space where sound waves can be detected.

How can a magnetic field be created?

• Using gravitational force

• Through electric current or permanent magnets

• Rubbing two objects together

• Heating a substance

What is electromagnetism?

• Interaction between light and matter

• Earth's magnetic field

• Physics of the electromagnetic force

• Electrical currents in the human body

How does an electromagnet work?

• It uses a permanent magnet to create a magnetic field.

• It heats up a metal rod to create a magnetic field.

• It passes an electric current through a coil of wire, creating a magnetic field.

• It uses a battery to create a magnetic field.

What are examples of magnetic materials?

• gold, silver, platinum

• wood, plastic, glass

• steel, copper, aluminum

• iron, nickel, cobalt, alloys

What happens when two same-pole magnets are brought close?

• They attract.

• They repel.

• They stick.

• No effect.

What happens when two magnets with opposite poles are brought close to each other?

• They create a magnetic field.

• They have no effect on each other.

• They repel each other.

• They attract each other.

What is the difference between a permanent magnet and an electromagnet?

• A permanent magnet retains its magnetism without external current, while an electromagnet needs electric current to exhibit magnetism.

• A permanent magnet can be turned on and off, while an electromagnet is always on.

• A permanent magnet is made of iron, while an electromagnet is made of copper.

• A permanent magnet loses its magnetism over time, while an electromagnet retains its magnetism indefinitely.

What are the two types of magnetic poles?

• East and West

• Up and Down

• North and South

• Positive and Negative

What is the law of magnetic poles?

• Like poles repel, unlike poles attract.

• Like poles attract, unlike poles repel.

• Like poles attract and repel each other.

• Unlike poles attract and repel each other.