Grade 9 Circuit Calculations Worksheet
A worksheet for Grade 9 science students to practice calculating current, voltage, and resistance in series and parallel circuits.
Includes
Standards
Topics
Grade 9 Circuit Calculations
Name:
Date:
Score:
Read each question carefully and show all your work. Use the formulas: V = IR (Ohm's Law), Series Resistance: R_total = R1 + R2 + ..., Parallel Resistance: 1/R_total = 1/R1 + 1/R2 + ...
1. Which of the following best describes the relationship between voltage, current, and resistance?
Voltage is directly proportional to current and inversely proportional to resistance.
Current is directly proportional to voltage and inversely proportional to resistance.
Resistance is directly proportional to voltage and current.
All of the above.
2. In a series circuit with three resistors (R1, R2, R3), how is the total resistance calculated?
R_total = R1 * R2 * R3
R_total = (R1 + R2 + R3) / 3
R_total = R1 + R2 + R3
1/R_total = 1/R1 + 1/R2 + 1/R3
3. The unit of electrical current is the .
4. In a parallel circuit, the voltage across each branch is .
5. A series circuit has a voltage source of 12V and three resistors with resistances of 2Ω, 4Ω, and 6Ω. Calculate the total resistance of the circuit and the current flowing through it.
6. A parallel circuit has a 12V battery and two resistors, 3Ω and 6Ω, connected in parallel. Calculate the total resistance of the circuit and the total current drawn from the battery.
7. Adding more resistors in series decreases the total resistance of the circuit.
True
False
Related Worksheets
Grade 9 Kinematics Worksheet
A worksheet for Grade 9 Science students covering fundamental concepts of one-dimensional kinematics, including displacement, velocity, acceleration, and motion graphs.
Specific Heat Worksheet
Explore the concept of specific heat capacity, its formula, and real-world applications in this Grade 9 Science worksheet.
Centripetal Acceleration Worksheet
Explore the concepts of centripetal force and acceleration with this Grade 9 science worksheet, featuring multiple choice, fill-in-the-blanks, and short answer questions.
Thermodynamics Fundamentals Worksheet
Explore the basic concepts of thermodynamics, including heat transfer, states of matter, and the laws of thermodynamics.
Electromagnetic Waves and Interference Worksheet
Understand the properties of electromagnetic waves and the phenomena of wave interference with this Grade 9 science worksheet.
Work and Energy Review
A Grade 9 science worksheet covering fundamental concepts of work, energy, and power, including calculations and definitions.
Grade 9 Magnetism Worksheet
Explore the fundamental principles of magnetism, including magnetic fields, poles, and electromagnets, with this comprehensive Grade 9 science worksheet.
Electrical Load Calculation Worksheet
A Grade 9 Science worksheet focusing on understanding and calculating electrical loads in circuits.