Grade 12 Electricity Worksheet
A Grade 12 physics worksheet covering fundamental concepts of electricity, including circuits, Ohm's Law, and power.
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Grade 12 Electricity Worksheet
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Read each question carefully and answer to the best of your ability. Show all your work for calculation problems.
1. Which of the following statements correctly describes Ohm's Law?
Voltage is directly proportional to resistance.
Current is inversely proportional to voltage.
Voltage is directly proportional to current.
Resistance is inversely proportional to current.
2. What is the unit of electrical power?
Volt
Ampere
Ohm
Watt
3. A series circuit has only one path for the to flow.
4. The opposition to the flow of electric current is called .
5. Explain the difference between a series circuit and a parallel circuit.
6. State Kirchhoff's Voltage Law (KVL) and Kirchhoff's Current Law (KCL).
7. For the circuit shown below, calculate the total resistance and the total current flowing from the voltage source.
Given: V = 12V, R1 = 2Ω, R2 = 4Ω, R3 = 6Ω
8. A light bulb with a resistance of 240 Ω is connected to a 120 V power source. Calculate the current flowing through the bulb and the power dissipated by the bulb.
9. In a parallel circuit, the voltage across each component is the same.
True
False
10. Direct current (DC) periodically reverses its direction of flow.
True
False