Are you a class 12 student studying in cbse/icse? Using our kits, you can make your physics investigatory project within hours. All that you need is our project kit-affordable, quality and fun learning package. The kit comes packaged with all requisite tools & components, step-by-step visual instructions and a manual so that you could build your project in shortest possible amount of time, write your project report and get done with it!!!

1. Do-it-Yourself Kits for
Physics Investigatory Projects
For 12th science students.
1 Kirchhoff Laws and
Ohm’s Law
1.Kirchhoff’s Voltage Law: Verification of Kirchhoff’s Voltage La w in a series combination of LEDs.
2.Kirchhoff’s Current Law: Verification of Kirchhoff’s Current Law in a parallel combination of LEDs.
3.Ohm’s Law: Verification of Ohm’s Law in a circuit.
CJKLOL-001
2 Variable Resistors:
Potentiometer, Preset
and LDR
1. Potentiometer as Variable Resistor: Using a potentiometer as a variable resistor; verify the varying
current using a multimeter.
2. Preset as Variable Resistor: Using a preset as a variable resistor; verify the varying current using a
multimeter.
3. LDR as Variable Resistor: Using an LDR to vary the intensity of an LED; verify the varying resistance
and current using a multimeter.
4. Potentiometer as Voltage Divider: Using a potentiometer as a voltage divider; verify the varying
voltage using a multimeter. Implementation of conc ept in ‘Sequential glow of LEDs at different
voltages’
5. Alternate Glowing of LEDs Using a Preset: Alternate glowing of LEDs using a preset and depicting
the internal structure of a preset (or potentiometer).
CJVR-002
3 Capacitors 1. Charging the Capacitor with a Resistor: Charging different capacitors with resistors and time
constant calculations during charging; Three different cases: 1000 ìf + 1 k? , 100 ìf + 10 k? , 100 ìf
+ 330 ? .
2. Discharging the Capacitor with a Resistor: Discharging different capacitors with resistors and time
constant calculations during discharging; Three different cases: 1000 ìf + 1 k? , 100 ìf + 10 k? , 100
ìf + 330 ? .
CJC-003
4 Relay and
Electromagnetism
1. Burglar Alarm: Burglar Alarm using a relay with modification and concept of Feedback.
2. Alternate Switching of LEDs Using a Relay: Application of relay as a switch.
3. Relay as an Oscillator
CJRL-004
5 Diode 1. To Learn How a Diode Works: Diode as a switch; its functioning in forward bias and reverse bias
modes; verifying biasing condition using a multimeter.
2. Low Resistance Path Using a Diode: Current following a minimum resistance path through the
diode, when it is forward biased.
3. Protecting a Circuit Using a Diode: application of diode as protection device.
CJD-005
6 Digital Logic Gates-1:
OR and AND (using
diodes)
1. OR Gate Using Diodes: Realizing the truth table of a 2-input OR gate, and analyzing the path of the
current in four cases.
2. AND Gate Using Diodes: Realizing the truth table of a 2-input AND gate, and analyzing the path of
the current in four cases.
CJDLG1-006
7 Digital Logic Gates-2:
NOR and NAND (using
diodes)
1. NOR Gate Using Diodes: Realizing the truth table of a 2-input NOR gate, and analyzing the path of
current in four cases.
2. N AND Gate Using Diodes: Realizing the truth table of a 2-input NAND gate, and analyzing the path
of the current in four cases.
CJDLG2--007
8 Zener Diode 1. To Learn How a Zener Diode Works: Functioning of zener diode in forward and reverse bias modes;
verifying reverse breakdown voltage using a multimeter.
2. Zener diode as Voltage Regulator.
CJZD-008
9 Transistors Transistor as Amplifier and Switch: Demonstrating the cut-off, active and saturation regions,
identifying the biasing conditions for all the three regions and experimental calculation of beta in
active and saturation regions.
*This pack also contains the following experiments: Identifying the type of BJT transistor using a
multimeter, Measuring the gain of a transistor and demonstrating B-E Junction as diode in a transistor.
CJTR-009
SR. No. DIY KITs List of Experiments Product Code
Shop Online: Ewww.cooljunk.in/physics-projects-kits : info@cooljunk.in
R. Ganesan: Gurpawan Mand: Vaibhav Sharma9560333610 9818905882 : 9899200312

2. Do-it-Yourself Kits for
Physics Investigatory Projects
For 12th science students.
SR. No. DIY KITs List of Experiments Product Code
18 DC Motor:
Relationship between
RPM & Voltage
Controlling Speed of DC Motor: Demonstrating factors affecting the speed of DC motor; establishing
relationship between RPM and voltage.
CJDCM-018
19 Wheatstone Bridge* Wheatstone Bridge: Verifying the wheatstone bridge principal and experimental calculation of
unknown resistor value using a potentiometer.
CJWSB-019
20 Diode Application-1* Bridge Rectifier: Realizing the full-wave rectifier using a combination of diodes and a 12 V AC step-
down transformer; verifying the rectified output DC voltage using a multimeter.
CJDA1-020
21 Diode Application-2* Full-wave Rectifier Using a Center-tap Transformer: Realizing the full-wave rectifier using a
combination of diodes and a 12 V AC center=tap transformer; verifying the rectified output DC
voltageusing a multimeter.
CJDA2-021
22 Joule Thief* Joule Thief (DC Boost Converter): Drawing energy from a dead cell using a series LCR Circuit . CJTRA7-022
23 Infra-red Application-
1*
Security Alarm System using an IR Sensor: Building transmitter and receiver circuits using an IR LED
and a photodiode; triggering and giving feedback to relay for continuous beeping of alarm in case of
any obstacle detection.
CJIRA1-023
24 Temperature Sensor* Temperature Sensor: Demonstration of temperature controlled switch using voltage divider circuit
and thermistor.
CJTS-024
13 Digital Logic Gates-3:
OR and AND (using
transistors)
1. OR Gate Using Transistors: Realizing the truth table of a 2-input OR gate, and analyzing the path of
the current in four cases.
2. AND Gate Using Transistors: Realizing the truth table of a 2-input AND gate, and analyzing the path
of the current in four cases.
CJDLG3-013
14 Digital Logic Gates-4:
NOR and NAND (using
transistors)
1. NOR Gate Using Transistors: Realizing the truth table of a 2-input NOR gate, and analyzing the path
of current in four cases.
2. N AND Gate Using Transistors: Realizing the truth table of a 2-input NAND gate, and analyzing the
path of the current in four cases.
CJDLG4-014
15 Transistor Application-
4: Inverter (NOT Gate)
Transistor as an Inverter: Realizing the truth table of NOT gate and analyzing the path of the current in
two cases; low and high inputs.
CJTRA4-015
16 Transistor Application-
5: LED Flasher
Transistor as Blinker (LED Flasher): Demonstrating the concept of Tunnelling using a transistor and
learn about Esaki diode.
CJTRA5-016
17 Transistor Application-
6: H-Bridge
H-Bridge: Motor-driving circuit used in robotics to control the director of rotation of motors. CJTRA6-017
10 Transistor Application-
1: Touch Activated
Switch
Touch Activated Switch Using a Transistor: Application of transistor as a switch and verifying the
biasing conditions of ‘transistor in saturation region’.
CJTRA1-010
2:
Darlington Pair:11 Transistor Application-
Darlington Pair
Cascading two transistors for multistage amplification. CJTRA2-011
12 Transistor Application-
3: Automatic Night
Lamp
Automatic Night Lamp: Application of Transistor as an automatic switch CJTRA3-012
Shop Online: Ewww.cooljunk.in/physics-projects-kits : info@cooljunk.in
R. Ganesan: Gurpawan Mand: Vaibhav Sharma9560333610 9818905882 : 9899200312