Lesson Plan for Senior Secondary 1 - Physics - Verification Of Ohm's Law (practical)

### Lesson Plan: Verification of Ohm's Law (Practical) **Grade Level:** Senior Secondary 1 **Subject:** Physics **Topic:** Verification of Ohm's Law **Duration:** 80 minutes --- #### Learning Objectives: By the end of this lesson, students should be able to: 1. Understand the concept of Ohm's Law. 2. Set up a simple electric circuit. 3. Measure voltage and current in a circuit. 4. Verify Ohm's Law through experimentation. 5. Analyze and interpret experimental data. #### Materials Needed: - Resistors - Voltmeter - Ammeter - Connecting wires - Breadboard or circuit board - Power supply (DC source) - Rheostat (variable resistor) - Multimeter (optional) - Ohm's Law worksheet #### Pre-Class Preparation: 1. Assemble all materials and ensure that the instruments are functioning correctly. 2. Prepare a diagram of the experimental setup for reference. 3. Create a worksheet for students to record observations and calculations. #### Lesson Plan: **1. Introduction (10 minutes)** - Greet the students and take attendance. - Briefly recap the basics of electricity, including voltage, current, and resistance. - Introduce Ohm's Law: \( V = IR \), where V is voltage, I is current, and R is resistance. - Explain the purpose of the experiment: to verify Ohm's Law by measuring voltage and current and determining the resistance. **2. Demonstration and Explanation (15 minutes)** - Display the diagram of the circuit setup on the board. - Explain each component's role in the circuit. - Show how to connect the circuit using the breadboard or circuit board. - Emphasize safety precautions when handling electrical components. **3. Group Activity: Circuit Assembly (20 minutes)** - Divide students into small groups. - Distribute the materials to each group. - Instruct students to assemble the circuit based on the demonstrated setup. - Provide guidance and support as students work on their circuits. **4. Measurement and Data Collection (20 minutes)** - Once the circuits are assembled, instruct students to: 1. Adjust the rheostat to vary the current. 2. Measure the voltage across the resistor using the voltmeter. 3. Measure the current through the circuit using the ammeter. - Record measurements in the provided worksheet for different values of current and voltage. **5. Analysis and Verification (10 minutes)** - Have students calculate the resistance \((R)\) for each set of measurements using Ohm's Law \( (R = V/I) \). - Compare calculated resistance values to determine consistency. - Discuss discrepancies and potential sources of experimental error. **6. Conclusion and Cleanup (5 minutes)** - Summarize the key findings and reinforce the principle of Ohm's Law. - Allow students to ask questions and provide clarifications as needed. - Supervise the disassembly and proper storage of equipment. **7. Homework Assignment/Worksheet (optional)** - Assign students a few problems related to Ohm's Law to complete at home. - Encourage students to reflect on the experiment and write a brief report summarizing their findings. **8. Assessment:** - Evaluate students based on their participation, accuracy of measurements, and analysis of data. - Collect and review completed worksheets. ### Tips for Successful Implementation: - Ensure all students actively participate and understand each step of the experiment. - Address any technical issues with the apparatus promptly. - Encourage teamwork and collaborative problem-solving. ### Additional Resources: - Simulation software for virtual circuit experiments. - Interactive websites and videos explaining Ohm’s Law. --- By following this lesson plan, students will gain hands-on experience and a deeper understanding of verifying Ohm's Law through practical experimentation.