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 8
A 12 V battery is connected to two resistors in parallel: 3 Ω and 6 Ω. What is the current through the 3 Ω resistor?
A 12 V battery is connected to two resistors in series: 2 Ω and 4 Ω. What is the voltage drop across the 4 Ω resistor?
A 6 V battery is connected to two resistors in parallel: 2 Ω and 3 Ω. What is the total current supplied by the battery? (Round to two decimal places.)
A 9 V battery is connected to three resistors in series: 1 Ω, 2 Ω, and 3 Ω. What is the current in the circuit?
A circuit contains three bulbs in parallel. If the current through each bulb is 0.5 A, what is the total current supplied by the battery?
A parallel circuit has three resistors: 2 Ω, 4 Ω, and 8 Ω. What is the total resistance? (Round to two decimal places.)
A student builds a circuit with two bulbs in series and measures the brightness. She then builds a parallel circuit with the same bulbs. Which circuit will have brighter bulbs?
A student connects two bulbs in series to a battery. If one bulb burns out, what happens to the other bulb?
Describe one advantage and one disadvantage of using a series circuit.
Describe the main difference between a series and a parallel circuit.
Explain what happens to the total resistance in a parallel circuit as more branches are added.
Explain why household lights are connected in parallel and not in series.
If a 10 Ω resistor and a 20 Ω resistor are connected in parallel, what is the total resistance?
If a 12 V battery is connected to two resistors in parallel (3 Ω and 6 Ω), what is the total current supplied by the battery?
If a 12 V battery is connected to two resistors in series (3 Ω and 5 Ω), what is the current in the circuit?
If a 9 V battery is connected to a series circuit with three identical bulbs, what happens to the brightness of each bulb compared to a single bulb connected to the same battery?
If three resistors of 2 Ω, 4 Ω, and 6 Ω are connected in parallel, what is the total resistance? (Round your answer to two decimal places.)
If three resistors of 2 Ω, 4 Ω, and 6 Ω are connected in series, what is the total resistance?
In a parallel circuit, if more branches are added, what happens to the total current from the source?
Which type of circuit is safer for wiring in buildings and why?
