Series and Parallel Resistors Worksheet
Explore the concepts of series and parallel circuits, calculate total resistance, current, and voltage in various circuit configurations.
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Series and Parallel Resistors Worksheet
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Read each question carefully and answer to the best of your ability. Show all work for calculations.
1. In a series circuit, what remains constant across all resistors?
Voltage
Current
Resistance
Power
2. Adding more resistors in parallel to an existing parallel circuit will:
Increase total resistance
Decrease total resistance
Keep total resistance the same
Increase total current
3. The total resistance in a series circuit is the of individual resistances.
4. In a parallel circuit, the voltage across each resistor is .
5. Consider a series circuit with three resistors: R1 = 10 Ω, R2 = 20 Ω, and R3 = 30 Ω, connected to a 12 V battery. Calculate the total resistance of the circuit.
6. For the same series circuit in question 5, calculate the total current flowing through the circuit.
7. Analyze the circuit diagram below and identify if it is a series or parallel circuit. Explain your reasoning.

8. If one light bulb in a series circuit burns out, all other bulbs in the circuit will also go out.
True
False
9. The total current in a parallel circuit is the sum of the currents in each branch.
True
False
10. Two resistors, R1 = 15 Ω and R2 = 25 Ω, are connected in parallel to a 9 V battery. Calculate the equivalent resistance of the circuit.