2) Electricity

What is the function of a switch in a circuit?

• To open or close the circuit
• To produce light
• To store energy
• To resist current

What does an open circuit mean?

• Electricity flows
• The circuit is complete
• Electricity cannot flow
• The bulb turns on

Which part of the circuit provides energy?

• Wire
• Bulb
• Battery
• Switch

Which material is an electrical conductor?

• Plastic
• Rubber
• Copper
• Wood

What kind of electricity do batteries produce?

• Static
• Direct current (DC)
• Alternating current (AC)
• Mechanical

What flows in a closed circuit?

• Water
• Light
• Electrons
• Sound

What is a resistor used for?

• To increase voltage
• To produce heat
• To control electric current
• To break the circuit

Which device transforms electricity into motion?

• Resistor
• Motor
• Buzzer
• Switch

Which of these is an insulator?

• Aluminum
• Copper
• Plastic
• Iron

What happens when you touch a metal doorknob after walking on a carpet?

• You feel cold
• You receive an electric shock
• You hear a sound
• You see a flash