Alternating current is one type of electrical current; what is the other type?

• In-rush current

• River current

• Direct current

• Unaltered current

Which of the following is not a component of a basic electrical circuit?

• Input device

• Output device

• Insulator

• Power supply

A(n) ________ determines if electricity is present in a circuit.

• Ohmmeter

• Circuit tester

• Ammeter

• Solenoid

A simple method for opening or closing a circuit is to use a _________.

• Switch

• Wire

• Battery

• Resistor

Rotary motion is the output of which electrical output device?

• Buzzer

• Resistor

• Motor

• Solenoid

A knife switch consists of a lever and one or more sets of _________.

• Contacts

• Wires

• Springs

• Bolts

Electricity is the flow of ________ in a conductor.

• Protons

• Neutrons

• Electrons

• Photons

Which of the following is true of an electrical schematic diagram?

• Represents components with standard symbols.

• Shows how the components are interconnected.

• Is helpful in troubleshooting a circuit.

• All of the above

Constant voltage power supplies will maintain a constant voltage output under varying ________.

• Loads

• Weather conditions

• Levels of light

• Chemical reactions

Describe the function of the four basic components of an electrical circuit.

• To provide mechanical support

• To store electrical energy

• To control the flow of electricity

• To convert electrical energy into light