Basic Electricity - Senior Secondary 1 - Basic electrical and electronics signs and symbols
Basic electrical and electronics signs and symbols
Basic electrical and electronics signs and symbols
TERM: 1ST TERM
WEEK ONE
Class: Senior Secondary School 1
Age: 15 years
Duration: 40 minutes of 5 periods each
Date:
Subject: BASIC ELECTRICITY
Topic: BASIC ELECTRICAL AND ELECTRONICS SIGNS AND SYMBOLS
SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to
I.) Discuss electrical signs and symbols
II.) Identify common electrical symbols
III.) State the functions of the electrical symbols
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 explains the meaning of electrical signs and symbols used in electricity. |
Students listens attentively to the teacher |
|
STEP 2 EXPLANATION |
Teacher identify the most common used symbols and state their functions. |
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
BASIC ELECTRICAL AND ELECTRONICS SIGNS AND SYMBOLS
Electrical signs and symbols are visual representations used in electrical and electronic diagrams to convey information about components, connections, and circuits. They serve as a universal language for engineers, electricians, and technicians to understand and communicate complex electrical systems. Common symbols include those for power sources, switches, resistors, capacitors, inductors, diodes, transistors, etc.
Some common electrical symbols and their functions:
|
Symbols |
Functions |
|
Battery
|
Represents a power source, typically a battery or a set of batteries. |
|
Switch
|
Controls the flow of current in a circuit, allowing it to be turned on or off |
|
Resistor
|
Limits the flow of current in a circuit, often used to control voltage. |
|
Capacitor
|
Stores electrical energy temporarily and releases it when needed. |
|
Inductor |
Stores energy in a magnetic field when current flows through it. |
|
Diode
|
Allows current to flow in one direction only, blocking it in the reverse direction |
|
Transistor
|
Used for amplification, switching, and signal modulation in electronic circuits |
|
Fuse
|
Protects circuits from overcurrent by melting and breaking the circuit. |
EVALUATION: 1. What do you understand by, electrical signs and symbols
CLASSWORK: As in evaluation
CONCLUSION: The teacher commends the students positively
