Power formula
Power = Voltage x Current
Symbol- W
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Current
Symbol - I
Unit - Ampere
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Voltage
Symbol - V
Unit - Volt
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LED
Voltage of our LED - 3.4 volts
RESISTOR
Unit of Resistor- Ohms
Symbol - Ω
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Construction of Buzzer
There are two plates- Piezo electric plate and Vibration plate.
When the Vibration plates gets current it shakes the Piezo Electric and Piezo electric plate make the
sound.
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Components required inside DC motor
Magnets, Coil, Shaft and the Battery.
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Resistor
How to remember the resistor colour coding
BB ROY OF GREAT BRITAIN HAD A VERY GOOD WIFE AND GOOD SISTER
Colour coding formula
AB x 10c
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SWITCH
What is switch?
Switch is used to control the device manually.
Used for interrupting the flow of electrons
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PARRALEL CONNECTION
In parallel connection voltage is same and current is different.
It controls multiple components in multiple paths.
Ex- Room Switch
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SERIES CONNECTION
In series connection current is same and voltage is different.
Component is connected in a single path.
Ex – Main switch
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POTIENTIOMETER
It is three terminal resistors
It is used to control the flow of current by changing its resistance.
CONTRUCTION POTIENTIOMETER
Carbon Track
Rotating Viper
Shaft
Resistive Material
Terminals
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CAPACITOR
It is a temporary storage device.
Its charging when we give it electricity and discharges it when we remove the electricity.
Unit – Farad
CONSTRUCTION
There is a dielectric material between two metal plates.
Dielectric material. It is an insulating material that does not allow electricity to pass through it.
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BATTERY
There are 2 types of battery.
1. Rechargeable battery
2. Non- rechargeable battery
Rechargeable battery is known as Secondary Battery
Non- rechargeable battery is known as Primary Battery
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VOLTAGE REGULATOR
An electronic component that maintains a constant voltage level.
Our voltage regulator is 7805
The last 5 or the last digit means the constant voltage it will give out
And the first 2 number “78” is the family number.
There are 3 pins.
Red- Positive
Green- Workspace pin
Black- Negative
TYPES OF VOLTAGE REGULATOR
Switching Voltage Regulator
Linear Voltage Regulator.
ADVANTAGE
Easy to use
It is most efficient
Very cheap and light weight and easily available
Very compact in size.
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TRANSISTOR
Transfer + Resistor = Transistor
PIN CONFIGURATION
1. Basics of electronics ( T )
2. Working of LED , Buzzer , DC Motor - ( T + P)
3. Resistor color coding ( T + C )
4. Simulation software ( T )
5. Breadboard , Switch ( T + P)
6. Series , Parallel, Potentiometer , capacitor , SPDT Switch ,Two way switch ( T + P )
7. Voltage regulator , Transistor ,Raindrop sensor . IR Sensor , Touch sensor ( T + P)
8. Multimeter , water level indicator , NOT Gate ( T )
PRACTICAL
Total 50 Marks
30 Marks
1. Answer the following
2. Choose the best answer
3. Fill in the blanks
4. Match the following
20 Marks
1. Practical 15 Marks
2. Oral – 5 Marks
