Science: Matter and Energy - Section 9.4 Quiz

Nora and Olivia are setting up a small home theater system. They use two identical speakers, each with a resistance of 20 Ω, connected in parallel. What is the total resistance of the speaker system?

• 10 Ω

• 20 Ω

• 40 Ω

• 80 Ω

In which type of circuit is the current divided among separate branches?

• open circuit

• closed circuit

• series circuit

• parallel circuit

Identify the component that burns out to protect a circuit from excessive current.

• circuit breaker

• fuse

• short circuit

• resistor

Mia is trying to turn on a light bulb, but the light won't turn on. What term describes a circuit through which current cannot flow?

• open circuit

• closed circuit

• series circuit

• parallel circuit

Anika noticed that the lights in her house went out when she plugged in too many appliances. She learned that an automatic switch that opens when current overloads a circuit is called a _____

Anika is setting up a circuit for her science project. She accidentally connects the wires in such a way that it creates a short circuit. What happens in this scenario?

• Current is increased

• Current is decreased

• Current bypasses the load

• Current is stabilized

Tags

NGSS.HS-PS3-5

Noah is setting up a simple electrical circuit for a school project. He uses four 5 Ω resistors linked in series. If he connects a 10.0 V battery to the circuit, what will be the current through the circuit?

• 1.0 A

• 0.25 A

• 2.0 A

• 0.5 A

Ethan is setting up a new lighting system in his room and decides to add more light bulbs in parallel to the existing ones. What happens to the total resistance in the circuit when more light bulbs (resistors) are added in parallel?

• It doubles

• It decreases

• It increases

• It remains the same

Ava and Luna are setting up a sound system for a party. They have two speakers, each with a resistance of 20 Ω. Determine the total resistance of the parallel circuit they form with these two speakers.

• 10 Ω

• 20 Ω

• 40 Ω

• 80 Ω

Abigail and Arjun are working on a science project with a circuit that has three light bulbs connected in parallel. What will happen if one light bulb is removed from this circuit?

• The other bulbs will go out.

• The other bulbs will stay on

• The other bulbs will get dimmer.

• The battery will become stronger.