Electrical Circuits Quiz

What is the source of energy needed to create a circuit that can do useful work?

• Thermal energy

• Electrical energy

• Mechanical energy

• Chemical energy

Which subatomic particles have a positive charge?

• Neutrons

• Electrons

• Photons

• Protons

What happens when opposite charges interact?

• They explode

• They cancel out

• They repel

• They attract

What type of material allows charges to flow?

• Insulator

• Conductor

• Semiconductor

• Superconductor

What is the flow of charged particles through a circuit called?

• Current

• Resistance

• Power

• Voltage

What happens if there is a break in the wire of a circuit?

• Voltage increases

• Power doubles

• Current stops flowing

• Resistance decreases

What is the definition of a circuit?

• A random path for charges

• A closed path for charges

• An open path for charges

• A zigzag path for charges

What is the role of a switch in a circuit?

• Generate more power

• Increase current flow

• Decrease resistance

• Break the circuit

What is the unit used to measure current?

• Amps

• Watts

• Volts

• Ohms

Which material is considered a good conductor?

• Plastic

• Glass

• Copper

• Rubber