Determination of resistance of Galvanometer by half deflection method.
Apparatus: A low resistance galvanometer, a cell, two resistance box, two one way plug keys, connecting wires and sand paper. Theory: Set the circuit according
Study of variation of photo electric current with intensity of light.
Apparatus: Photocell, battery, key, micro ammeter or galvanometer, electric lamp, ruler and conne wires. Theory: In photocell an electric current is produced by the photo
Construction of burglar alarm using “NOT” gate.
Apparatus: NOT gate, thermistor (e.f. GM472 or VA 3404) variable resistor, power supply (6V), buzzer Theory: The thermistor is a device whose resistance changes by
Construction of burglar alarm using “NAND” gate.
Apparatus: CRP123 power supply (6V), variable resistor (100k), NAND gate, buzzer bread board. Theory: NAND gate is the combination of AND gate followed by NOT
Verified of truth table for “NOT” Gate.
Apparatus: An npn transistor (BC547A), two resistors 1-2 and 20, 30k, power supply (SV), connecting wires, two-way key, LED and a bread board. Theory: NOT
Verification of truth table for ‘OR” Gate.
Apparatus: Two semiconductor diode (SD-1), power supply (SV), resistance 4.7k, LED, 2 two-way keys. Theory The “OR” gate is an electronic circuit with two or