Grade 11 Physics: Parallel Circuits Worksheet
Explore the principles of parallel circuits with this Grade 11 physics worksheet, covering voltage, current, resistance, and real-world applications.
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Grade 11 Physics: Parallel Circuits
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Read each question carefully and provide your answers in the spaces provided. Show all your work for calculation-based problems.
1. In a parallel circuit, if one resistor is removed, what happens to the total resistance of the circuit?
It increases.
It decreases.
It remains the same.
It becomes zero.
2. Which of the following quantities is the same across all branches in a parallel circuit?
Current
Resistance
Voltage
Power
3. The total current in a parallel circuit is the of the currents in each branch.
4. In a household electrical wiring system, appliances are connected in to ensure they receive the full supply voltage.
5. Consider the parallel circuit shown below:
If R1 = 10 Ω, R2 = 20 Ω, and the voltage source is 12 V, calculate the total equivalent resistance of the circuit.
6. Using the information from question 5, calculate the total current flowing from the voltage source.
7. Adding more resistors in parallel increases the total equivalent resistance of the circuit.
True
False
8. Each branch in a parallel circuit has the same voltage drop across it.
True
False
9. Explain why parallel circuits are preferred over series circuits for household electrical wiring. Discuss at least two advantages.