circuits quiz

What is constant in a series circuit?

• resistance (measured in ohms)

• current (measured in amps)

• voltage (measured in volts)

• power (measured in watts)

What is constant in a parallel circuit?

• resistance (measured in ohms)

• current (measured in amps)

• voltage (measured in volts)

• power (measured in watts)

What type of current supplies electricity in homes and businesses?

• conventional current

• direct current

• potential current

• alternating current

In a series circuit, the equivalent resistance of the circuit will always be

• larger than any individual resistance.

• smaller than any individual resistance.

• equal to the largest individual resistance.

• equal to the smallest individual resistance.

When light bulbs are attached in series and one goes out, what happens to the others?

• They stay lit, but get dimmer.

• They get brighter.

• They all go out.

• It depends on the resistances of the other bulbs.

When bulbs are attached in parallel and one goes out, what happens to the others?

• They stay lit, but get dimmer.

• They stay lit with the same brightness.

• They each get brighter by the same amount.

• They all go out.

• It depends on the resistances of the other bulbs.

These resistances are attached in parallel: 8 Ω, 4 Ω, 40 Ω. What is the effective resistance in this case?

• 0.4 Ω

• 2.5 Ω

• 4 Ω

• 40 Ω

• 52 Ω

What electrical safety features is found in some portable equipment, and is designed to break if too much current is flowing?

• circuit breaker

• fuse

• GFCI

• switch

Which of these units measures energy consumption in homes?

• kilowatt-hour

• watt

• amp

• volt

Over 20 seconds, 0.60 Coulombs of charge flows in a circuit with a resistance of 50 Ω. What is the source voltage in this circuit?

• 0.03 V

• 0.67 V

• 1.5 V

• 12 V

• 30 V