Equivalent Resistance Worksheet
A Grade 11 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 the best answer. Show all your work for calculation problems.
1. Which of the following statements is true for resistors connected in series?
The voltage drop across each resistor is the same.
The current flowing through each resistor is the same.
The equivalent resistance is less than the smallest individual resistance.
The reciprocal of the equivalent resistance is the sum of the reciprocals of individual resistances.
2. For resistors connected in parallel, the total current from the source is:
The same as the current through each resistor.
Less than the current through any single resistor.
The sum of the currents through each resistor.
Cannot be determined without knowing the resistance values.
1. When resistors are connected in series, the equivalent resistance is always than the largest individual resistance.
2. In a parallel circuit, the across each resistor is the same.
3. Kirchhoff's Law states that the sum of currents entering a junction equals the sum of currents leaving it.
1. Calculate the equivalent resistance of three resistors (R1 = 10 Ω, R2 = 15 Ω, R3 = 20 Ω) connected in series.
2. Calculate the equivalent resistance of the same three resistors (R1 = 10 Ω, R2 = 15 Ω, R3 = 20 Ω) connected in parallel.
Consider the circuit diagram below:
If R1 = 5 Ω, R2 = 10 Ω, and the voltage source is 12 V, calculate the following:
a) The total equivalent resistance of the circuit.
b) The total current flowing through the circuit.
c) The voltage drop across R1 and R2.