Understanding electricity 1

What is the term used to describe electrical pressure?

• Current

• Resistance

• Voltage

• Power

Which term describes the flow of electrons?

• Voltage

• Current

• Power

• Resistance

What should you be able to explain after studying this section?

• The basic principles of magnetism

• The basic principles of electricity

• The basic principles of thermodynamics

• The basic principles of optics

Which of the following is necessary for an electric circuit to allow electrical current to flow?

• A power supply

• A resistor

• A capacitor

• A transformer

What is a device that uses electrical current called?

• Conductor

• Insulator

• Consumer

• Generator

Which of the following is a negatively charged particle?

• Proton

• Neutron

• Electron

• Positron

Which device measures electrical resistance?

• Voltmeter

• Ohmmeter

• Ammeter

• Thermometer

What is the unit of electrical resistance?

• Volts

• Ohms

• Amps

• Watts

What is the term for the flow of electric charge?

• Voltage

• Current

• Resistance

• Power

What is the term for the voltage available at the battery or generator with no circuit involved?

• PD (Potential Difference)

• EMF (Electromotive Force)

• Resistance

• Current