1. What kind of magnet can be turned on and off?

A. refrigerator magnet C. magnetite

B. electromagnet D. iron

2. Which of the items below could be used as the core of a simple electromagnet?

A. battery C. paper cup

B. nail D. wire

3. What is the role of the nail in an electromagnet?

A. It changes the direction of the magnetism.

B. It provides a pathway for the magnetic lines to get from one end of the coil to the

other.

C. It holds the wire in place.

D. It beautifies the material.

4. While electric current is flowing through a wire, what surrounds the wire?

A. magnetic field C. neutrons

B. a glowing light D. protons

5. Why are paper clips attracted to magnets? They contain_____.

A. Silver C. Tin

B. Aluminum D. Iron
please answer this need ko talaga yung tama​