Electric Circuits Review

Which of the following is true about electrical circuits?

• every circuit needs a switch that can start and stop the flow of electricity

• electricity can only flow if the circuit is open

• electricity can only flow if the circuit is closed

• they have to involve a wire made of insulating material

Which circuits will allow the bulb to light?

• A and C

• Only B

• B, D, and E

• B and D only

Tags

NGSS.MS-ETS1-2

What will happen if you disconnect one of the wires from the electromagnet in the picture?

• the paper clips will stay magnetic and continue to stick to the nail

• the nail will get hot

• the battery will spark

• the paper clips will no longer be magnetic and will drop off the nail

Is the circuit in the picture opened or closed?

• opened

• closed

• neither

Is the circuit in the picture opened or closed?

• opened

• closed

• neither

Why is the light bulb not lit?

• the circuit is open because the switch is open

• the circuit is closed because the switch is closed

• the battery is dead and you need a new battery

• the wires are not connected to the battery

What do you need to do to this picture to make the light bulb light up?

• change the battery out

• attach an extra wire

• close the switch and complete the circuit

• open the switch and complete the circuit

A student wants to make a simple circuit to show his parents how they work. What components should he use to construct his model?

• light bulb, battery, and magnet

• wire, battery, and light bulb

• wire, light bulb, and magnet

• magnet, wire, and light bulb

Tags

NGSS.3-5-ETS1-1

NGSS.4-PS3-4

Is the circuit in the picture open or closed?

• open

• closed

• neither

An electrical circuit that is not complete and does not allow electricity to flow through it is called a __________________.

• simple circuit

• closed circuit

• open circuit

• parallel circuit