Circuits Quiz

Why does removing a battery result in an open circuit?

• Because the circuit is completed

• Because there is no current through the circuit

• Because the circuit is overloaded

• Because the circuit is underloaded

According to Ohm’s law, where is the current greater in a parallel circuit?

• Through branches with higher resistance.

• Through branches with lower resistance.

• Through branches with no resistance.

• Through branches with equal resistance.

How many branches can a parallel circuit have?

• Only one

• Two or more

• None

• Exactly three

What type of wiring do homes typically use?

• Series wiring

• Parallel wiring

• Direct wiring

• Alternating wiring

What increases as the amount of current in the wires increases?

• The length of the wires.

• The amount of heat produced.

• The thickness of the wires.

• The color of the wires.

What is the purpose of an electrical fuse in a circuit?

• To increase the current

• To decrease the voltage

• To melt and break the circuit if the current is too high

• To store electrical energy

What must be done to restore the flow of charge in a circuit after a fuse has melted?

• Increase the voltage

• Replace the fuse

• Decrease the current

• Add more resistors

What does the power rating of an appliance help consumers understand?

• The lifespan of the appliance.

• The power consumption of the appliance.

• The brand reputation.

• The warranty period.

What does a device's electrical power depend on?

• Voltage difference and current

• Resistance and temperature

• Voltage difference and resistance

• Current and temperature

What does the 'I' represent in the power formula P = IV?

• Voltage

• Current

• Power

• Resistance