Circuits

What is a complete circuit known as?

• open circuit

• closed circuit

• broken circuit

• incomplete circuit

What happens when the paths of metal in a circuit are broken?

• The devices stop working

• The devices work more efficiently

• The devices become dangerous

• The devices continue working normally

What can switches do in a circuit?

• Change the direction of energy flow

• Increase the energy flowing through the wires

• Break the circuit and stop the flow of energy

• Connect the wires to the devices

What are the special switches in a panel called?

• Power strips

• Circuit breakers

• Substations

• GFCIs

When do circuit breakers automatically turn off?

• When the devices are not working properly

• When the wires are broken

• When the energy source is disconnected

• When there is too much energy flowing through the wires

What is the purpose of insulation around wires?

• To transfer electrical energy efficiently

• To prevent energy flow into devices

• To protect the wires from damage

• To increase the conductivity of the wires

Where do the wires that connect electrical outlets usually run through?

• Power lines

• Circuit breakers

• Walls, ceiling, and/or floors

• Substations

What is the main function of a circuit breaker?

• To prevent energy flow into devices

• To increase the conductivity of the wires

• To connect the wires to the devices

• To break the circuit in case of unsafe energy flow

What happens if a person receives a shock from an outlet with a GFCI?

• The circuit breaker flips off

• The person is injured

• The devices connected to the outlet stop working

• The GFCI automatically breaks the circuit

What is the purpose of circuit breakers in a building?

• To regulate the flow of energy to devices

• To prevent energy flow into devices

• To ensure the safety of the electrical system

• To increase the efficiency of the devices