Series and Parallel Circuits
Physics ⇒ Electricity and Magnetism
Series and Parallel Circuits starts at 8 and continues till grade 12.
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See sample questions for grade 9
A student connects three identical bulbs in series to a battery. What happens to the brightness of each bulb compared to a single bulb connected to the same battery?
Describe one advantage of using parallel circuits in home lighting systems.
Describe the main difference between series and parallel circuits.
Describe what happens to the total resistance if you add another resistor in series to a circuit.
A 10 Ω resistor and a 20 Ω resistor are connected in parallel. What is the total resistance?
A 12 V battery is connected to two resistors in parallel: 6 Ω and 3 Ω. What is the voltage across the 6 Ω resistor?
A 24 V battery is connected to four 6 Ω resistors in series. What is the current in the circuit?
A 24 V battery is connected to two resistors in parallel: 8 Ω and 12 Ω. What is the total resistance?
Which formula is used to calculate the total resistance (Rₜ) of two resistors, R₁ and R₂, in parallel? (1) Rₜ = R₁ + R₂ (2) 1/Rₜ = 1/R₁ + 1/R₂ (3) Rₜ = R₁ × R₂ (4) Rₜ = R₁ - R₂
Which of the following best describes a series circuit? (1) One path for current (2) Multiple paths for current (3) No path for current (4) Current flows in reverse
Which of the following is a disadvantage of a series circuit? (1) If one component fails, the circuit is broken. (2) Each component gets full voltage. (3) The current is different in each component. (4) The total resistance decreases with more components.
Which of the following is NOT a characteristic of a parallel circuit? (1) The current splits at each branch. (2) The voltage is the same across each branch. (3) The total resistance is greater than any branch. (4) Removing one branch does not stop current in others.
Fill in the blank: In a ______ circuit, the failure of one component does not affect the operation of the others.
Fill in the blank: In a series circuit, the current is ______ through all components.
Fill in the blank: The total resistance in a parallel circuit is always ______ than the smallest individual resistance.
In a parallel circuit, the total current is equal to the ______ of the currents through each branch.
If the total current in a parallel circuit is 6 A and there are two branches, one with 2 A and the other with 4 A, is the current conserved?
True or False: In a parallel circuit, each component receives the same voltage.
True or False: In a parallel circuit, the total current is less than the current in any one branch.
True or False: In a parallel circuit, the total resistance is always more than the largest resistor.
