PS.9 Electricity and Magnetism

What device makes a fan plugged into the wall spin?

• generator
• battery
• electromagnet
• electric motor

What is a wire in a circuit wrapped around an iron core called?

• electromagnet
• generator
• electric motor

Unlike poles of a magnet do what?

• repel
• attract
• nothing 

What energy transformation takes place in a battery powered fan that is spinning?

• kinetic to chemical to electrical
• chemical to kinetic
• chemical to electrical to kinetic
• electrical to kinetic to chemical

What is a complete path through which electric charges can flow called?

• magnetic pole
• electric circuit 
• electric resistance
• magnetic field 

What device changes mechanical kinetic energy into electrical energy?

• electric motor

• insulator

• electromagnet

• generator

What device changes electrical energy to mechanical energy?

• electromagnet
• electric motor
• conductor
• generator 

What do you make if you wrap a current-carrying wire around an iron bolt?

• electromagnet
• electric motor
• generator

Electricity that flows in a closed path is called a

• path
• current
• circuit

The flow of electricity in a circuit-

• current
• flow
• circuit