Electricity and Electronics Quiz

What does Ohm's law explain?

• The structure of an atom

• The types of electrical circuits

• The history of electricity

• The relationship between voltage, current, and resistance

What is the meaning of an open circuit?

• Electrical circuit in which current does not flow

• Electrical circuit where components are connected end to end

• Electrical circuit that has two different paths for the flow of current

• Explains the relationship between voltage, current, and resistance in a circuit

How can a family reduce its electricity consumption?

• Keep all devices plugged in at all times

• Use more electricity during peak hours

• Increase the use of electrical appliances

• Turn off lights when not in use

What is the unit of measurement for current ?

• Coulomb (C)

• Volt (V)

• Ampere (A)

• Ohm (Ω)

In an open circuit, what is the resistance?

• Infinite

• Minimum

• Zero

• Maximum

What happens to current flow in an electric circuit when resistance increases?

• Decreases

• Increases

• Remains the same

• Becomes zero

What is required to limit the current flow to 0.2 A when a 24 V is supplied?

• Power

• Voltage

• Resistance

• Current

What is the relationship between current flow, resistance, and voltage in Ohm's law?

• Current flow increases when resistance decreases and voltage increases

• Current flow decreases when resistance decreases and voltage increases

• Current flow increases when resistance increases and voltage decreases

• Current flow decreases when resistance increases and voltage decreases

What is the SI unit of resistance?

• Ohm (Ω)

• Volt (V)

• Ampere (A)

• Coulomb (C)

How does the resistance of a conductor change with an increase in temperature?

• Decreases

• Increases

• Remains the same

• Becomes zero