Exploring Series and Parallel Circuits

What is the formula stated for Ohm's Law?

• V = IR

• I = VR

• R = VI

• V = RI

How is total resistance calculated in a series circuit?

• Multiplication of all resistances

• Sum of all resistances

• Average of all resistances

• Division of voltage by current

What happens to the total current when resistance increases in a series circuit?

• It becomes zero

• It remains constant

• It increases

• It decreases

In a series circuit, which resistor would use the most power?

• The one with the highest resistance

• All use equal power

• The one with the lowest resistance

• The one closest to the power source

What is the rule for total current in a parallel circuit?

• It is the minimum current through a single branch

• It is the maximum current through a single branch

• It is the average of the currents through each branch

• It is the sum of the currents through each branch

How does adding more resistors in parallel affect the overall resistance?

• Decreases the resistance

• Increases the resistance

• Does not affect the resistance

• Doubles the resistance

What is the equivalent resistance in a parallel circuit if R1 is 3 ohms, R2 is 6 ohms, and R3 is 4 ohms?

• 13 ohms

• 6.33 ohms

• 1.33 ohms

• 4.33 ohms

Which resistor dissipates the most power in a parallel circuit?

• The one with average resistance

• The one with the most resistance

• The one with the least resistance

• All dissipate equal power

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

• To decrease resistance

• To prevent excessive current flow

• To increase current flow

• To measure the current flow

What should be used to measure the total current in a circuit?

• An ammeter in series

• A voltmeter in parallel

• A resistor in series

• A capacitor in parallel