Electricity and Magnetism

Why are electrical cords covered in plastic or rubber?

• because plastic and rubber are insulators which keeps us safe

• because it looks nicer

• because plastic and wire help conduct electricity

• because wires are color coded based on voltage

A series circuit will continue to work if one of the light bulbs is unscrewed.

• true

• false

These magnets will...

• attract

• repel

• nothing will happen

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

This is an example of what type of circuit?

• simple

• series

• parallel

What device changes mechanical kinetic energy into electrical energy?

• electric motor

• insulator

• electromagnet

• generator

Tags

NGSS.HS-PS3-3

What device changes electrical energy to mechanical energy?

• electromagnet
• electric motor
• conductor
• generator 

Tags

NGSS.HS-PS3-3

What is the purpose of a switch in an electric circuit?

• to allow the circuit to be opened or closed
• to change the direction of the current
• to provide a push for the current
• to increase the electric power to the load

Each time a lightbulb is added to a series circuit, the other bulbs in the circuit 

• get brighter
• get dimmer
• stay the same brightness
• release more heat

A group of lights are connected in a parallel circuit.  One of the lights is removed.  The rest of the lights will

• get brighter
• get dimmer
• go out
• not change

A string of lights is lit.  They are part of a series circuit.  One of the bulbs is removed.  The rest of the lights will

• go out
• stay lit
• get brighter
• get dimmer