Electricity Basics Quiz

Which of the following is NOT a key electrical property discussed in the introduction?

• Voltage

• Current

• Magnetism

• Resistance

What is the unit of voltage?

• Amperes

• Volts

• Ohms

• Watts

Which of the following best describes voltage?

• The power consumed by a device

• The resistance to electron flow

• The potential energy difference between two points

• The flow of electrons

What symbol is used to represent current in equations?

• C

• R

• I

• V

Why do electrons, rather than protons, flow in a conductor?

• Electrons are positively charged

• Protons have no charge

• Electrons are on the outside of atoms

• Protons are heavier

What is the unit used to measure resistance?

• Volts

• Amperes

• Ohms

• Watts

Which material is considered a good conductor due to its low resistance and affordability?

• Plastic

• Copper

• Silver

• Gold

According to Ohm's Law, what happens to the current if the voltage increases while resistance remains constant?

• Current decreases

• Current remains the same

• Current increases

• Resistance increases

What is the formula for calculating power using voltage and current?

• Power = Voltage / Current

• Power = Voltage x Current

• Power = Voltage - Current

• Power = Voltage + Current

If a device uses 5 amps of current and is connected to a 120-volt source, how much power does it consume?

• 600 watts

• 60 watts

• 12 watts

• 24 watts