Basic Electricity - Senior Secondary 1 - Kirchhoff's law II

Kirchhoff's law II

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TERM: 3RD TERM

WEEK FIVE

Class: Senior Secondary School 1

Age: 15 years

Duration: 40 minutes of 5 periods each

Date:

Subject: BASIC ELECTRICITY

Topic: KIRCHHOFF'S LAW II

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

I.) Verify Kirchhoff's laws experimentally

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures,

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

PRESENTATION

TEACHER’S ACTIVITY

STUDENT’S

ACTIVITY

STEP 1

INTRODUCTION

The teacher conduct the experiment of verifying the Kirchhoff laws

Students listens attentively to the teacher                                                                          

STEP 2

EXPLANATION

Teacher guide students also to carry out the experiment on their own

Students exhibit attentiveness and active engagement

STEP 3

NOTE TAKING

The teacher writes a summarized

note on the board

The students

copy the note in

their books

 

NOTE

KIRCHHOFF'S LAW II

To experimentally verify Kirchhoff's laws, you'll need a simple circuit setup with multiple components such as resistors, batteries, and wires. Below a basic procedure to verify both Kirchhoff's Current Law (KCL) and Kirchhoff's Voltage Law (KVL):

Materials Needed:

  1. Resistors
  2. Batteries or power supply
  3. Connecting wires
  4. Breadboard or circuit board
  5. Multimeter (for measurements)

Procedure:

  1. Setting up the Circuit:

   - Assemble a simple circuit on a breadboard or circuit board. Include a few resistors connected in series and/or parallel, and a battery or power supply to provide voltage.

   - Ensure you have multiple nodes (junctions) and loops in your circuit to verify both KCL and KVL.

  1. Measuring Currents (KCL):

   - Use a multimeter to measure the current flowing through each resistor in the circuit.

   - Identify a node (junction) in the circuit where multiple currents meet.

   - Measure the incoming and outgoing currents at this node. According to KCL, the sum of these currents should be zero.

  1. Measuring Voltages (KVL):

   - Choose a closed loop in the circuit.

   - Use the multimeter to measure the voltages across each component in the loop.

   - Add up the voltages, taking into account the polarity (sign) of each voltage drop across resistors and voltage rise across batteries. According to KVL, the sum of these voltages should be zero.

  1. Comparing Experimental Results:

   - Compare the measured currents and voltages with the theoretical predictions based on Kirchhoff's laws.

   - Ensure that the experimental results align closely with the theoretical expectations, confirming the validity of Kirchhoff's laws in the circuit.

EVALUATION: 1. Teacher evaluate students based on their performance from the experiment .

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively