Equivalent Resistance Worksheet
A Grade 10 Science worksheet focusing on understanding and calculating equivalent resistance in series and parallel circuits.
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Equivalent Resistance Worksheet
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Read each question carefully and provide accurate answers. Show all your work for calculation problems.
1. What is the formula for calculating the equivalent resistance of resistors connected in series?
1/R_eq = 1/R_1 + 1/R_2 + ...
R_eq = R_1 + R_2 + ...
R_eq = R_1 * R_2
R_eq = R_1 / R_2
2. In a parallel circuit, if one resistor is removed, what happens to the total resistance of the circuit?
Increases
Decreases
Stays the same
Becomes zero
3. In a series circuit, the current is through all components.
4. In a parallel circuit, the voltage across each branch is .
5. Calculate the equivalent resistance of three resistors connected in series with resistances of 5 Ω, 10 Ω, and 15 Ω.
6. A parallel circuit has two resistors with values of 20 Ω and 30 Ω. What is the equivalent resistance of this circuit?
7. Adding more resistors in series decreases the equivalent resistance of the circuit.
True
False
8. The equivalent resistance of a parallel circuit is always less than the smallest individual resistance.
True
False
9. Analyze the circuit diagram below. Calculate the equivalent resistance of the entire circuit.
Assume R1 = 10 Ω, R2 = 20 Ω, R3 = 30 Ω.