Circuits (part two)

Circuits (part two)

Multiple Choice

Would these pieces be conductors or insulators?

• conductors

• insulators

Multiple Choice

Why are these pieces conductors?

• Electric charge will flow easily through them.

• Electric charge will not flow through them easily.

Multiple Choice

This man is working with dangerous levels of electricity. What prevents him from getting shocked?

• His helmet

• His body is not metal so he's safe.

• His gloves.

Multiple Choice

How do this man's gloves prevent him from being shocked?

• His gloves are made of insulating material.

• His gloves are made of a conducting material.

Multiple Choice

Why do these wires have a plastic coating?

• The plastic coating is a conductor so it stops the wire from getting too hot.

• The plastic coating is an insulator so it stops the wire from getting too hot.

a circuit: is a path along which electric charges can flow.

a switch: controls the flow of charges by opening and closing a circuit.

an open circuit: The path in a circuit is broken so the electric charge does not have a complete loop to flow.

A closed circuit: The path is complete and the electric charge can flow in a loop.

Multiple Choice

What is this?

• A circuit

• A closed circuit

• An open circuit

• A switch

Multiple Choice

What is this?

• An open circuit.

• A closed circuit.

Multiple Choice

What is this?

• A closed circuit.

• An open circuit.

A series circuit, electric charges flow in a single path.

A parallel circuit: electric charges flow through the different paths. If one circuit breaks, then the electric charges flow through the other paths.

Multiple Choice

What is this?

• A series circuit

• A parallel circuit

Multiple Choice

What is this?

• A series circuit

• A parallel circuit

When there is too much electric charge in a wire it will get too hot.

We use circuit breakers or fuses to stop the flow of electric charge when this happens.

Circuit overload: There are too many electrical devices on one circuit.

amps: the flow of charge or current is measured in amps. You can look at many electrical devices and see how many amps it takes from a circuit.

Multiple Choice

What is this?

• A circuit

• A closed circuit

• An open circuit

• A switch