Electrical Load Calculation Worksheet
Grade 12 Physics worksheet focusing on electrical load calculations, including series and parallel circuits, Ohm's law, and power.
Includes
Standards
Topics
Electrical Load Calculation
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Date:
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Read each question carefully and provide your answers in the space provided. Show all your calculations for full credit.
1. Which of the following is the correct formula for calculating electrical power?
P = V/I
P = I/V
P = V * I
P = R * I
2. In a series circuit, what happens to the total resistance as more resistors are added?
It decreases
It increases
It remains the same
It becomes zero
3. Ohm's Law states that voltage is directly proportional to current and .
4. In a parallel circuit, the total current is the of the currents through each branch.
5. A circuit has a voltage of 120V and a current of 5A. Calculate the total power consumed by the circuit.
6. Explain the difference between a series circuit and a parallel circuit in terms of current flow and voltage distribution.
7. For the series circuit shown below, calculate the total resistance and the current flowing through the circuit.
Given:
Voltage Source = 12V
Resistor 1 (R1) = 2Ω
Resistor 2 (R2) = 4Ω
Resistor 3 (R3) = 6Ω
8. Adding more branches to a parallel circuit decreases the total resistance.
True
False