Electrical Introduction

1. What is the name for the flow of electrons in an electric circuit?

• Voltage

• Resistance

• Capacitance

• Current

What is the basic unit of electric current?

• The volt

• The watt

• The ampere

• The ohm

Which instrument would you use to measure electric current?

• An ohmmeter

• A wavemeter

• A voltmeter

• An ammeter

What is the name of the pressure that forces electrons to flow through a circuit?

• Magnetomotive force, or inductance

• Electromotive force, or voltage

• Farad force, or capacitance

• Thermal force, or heat

What is the basic unit of electromotive force (EMF)?

• The volt

• The watt

• The ampere

• The ohm

How much voltage does an automobile battery usually supply?

• About 12 volts

• About 30 volts

• About 120 volts

• About 240 volts

How much voltage does a wall outlet usually supply (in the UK)?

• About 12 volts

• About 30 volts

• About 240 volts

• About 480 volts

Which instrument would you use to measure electric potential or electromotive force?

• An ammeter

• A voltmeter

• A wavemeter

• An ohmmeter

What limits the current that flows through a circuit for a particular applied DC voltage?

• Reliance

• Reactance

• Saturation

• Resistance

What is the basic unit of resistance?

• The volt

• The watt

• The ampere

• The ohm