Kauwa

यह कार्यक्रम कौवे पक्षी के बारे में सामान्य जानकारी देता है जो हमारे देश में लगभग सभी जगहों में पाया जाता है। कार्यक्रम पर्यावरण को स्वच्छ रखने में इस पक्षी की भूमिका की भी चर्चा करता है।

No-cost Spirometer to Measure Lung Capacity

This program is based on the improvised version of a spirometer, a spirometer is an apparatus used for measuring the Lung Capacity (LC) or volume of air inspired and expired by the lungs. Lung function tests are useful in assessing the functional status of the respiratory system both in physiological and pathological conditions

Circuit Components

This is an episode from Current Electricity series; covers circuit components used in the laboratory experiments, battery eliminator as a source of direct current connecting wires, keys, switches, resistances fixed variable resistance, rheostat, resistance boxes, galvanometer, ammeter, voltmeter, connecting meters for detection as well as measurement of current, and voltmeters, digital meters, multimeters

Ohm's Law

This is an episode from Current Electricity series; covers Ohm's Law in direct current circuits, resistance of a length of wire, resistance per centimeter of a wire, experiment to determine resistance per unit length of a given wire, apparatus required for Ohm’s law experiment, observation table, working formula, calculation for resistance of a wire from Ohm’s law readings of potential difference and current, projects using Ohm’s law apparatus, sources of error in Ohm’s law experiment

Graph for Ohm's Law

This is an episode from Current Electricity series; covers the use of graph between potential difference and current from the readings obtained in Ohm's Law experiment to determine the resistance of a wire, it shows how to plot a graph using observations, method of plotting a potential difference current graph, choosing a scale, using full graph paper, average mean line passing through the origin, equation of the line using y=mx+c, physical significance of the slope of the line, finding slope of the line

Resistance of a Moving Coil Galvanometer by Half Deflection Method

This is an episode from Current Electricity series; covers method used to determine the resistance of a galvanometer by half deflection method also to find its figure of merit, helps in understanding the apparatus, the required circuit with explanation of function of each component, circuit connections, principle of working, formula used, observations, using observations for calculation of resistance of galvanometer coil and figure of merit, appreciate the importance of the experiment

Special Electrical Circuits with Resistances, Wheatstone Bridge, Principle of Meter Bridge

This is an episode from Current Electricity series; covers resistances in series, resistances in parallel, rules for combination of resistances, Wheatstone bridge, balanced Wheatstone bridge, meter bridge as a modification of Wheatstone bridge, design of meter bridge in the laboratory

Using Kirchoff's Rule for Electrical Circuit to Determine the Condition for Resistances for a Balanced Wheatstone's Bridge

This is an episode from Current Electricity series; covers design of Wheatstone bridge with four resistances, using Kirchoff's rules for electrical circuits derives the condition for balanced Wheatstone bridge, explains meter bridge as a practical variation of Wheatstone bridge, uses of balanced Wheatstone and meter bridge

Resistance of a Wire and Resistivity of the Material of a given Wire Wsing Meter Bridge

This is an episode from Current Electricity series; covers the use of meter bridge to determine the resistance of a wire , also calculate the resistivity of the material of the wire, apparatus used, circuit diagram, taking readings for meter bridge experiment, relating Wheatstone bridge balanced condition to meter bridge null deflection condition, formula used for calculation of resistance, formula used for specific resistance, sources of error precautions to be taken while taking observations, minimising error in observations by interchanging the position of resistance box with resistance wire, extension for project work using meter bridge apparatus

Verification the Laws of Combination of Resistances Series and Parallel Using Meter Bridge

This is an episode from Current Electricity series; covers use of meter bridge to verify the laws of combination of resistances series, parallel, principle of meter bridge, apparatus used for verification of laws of resistances in series parallel, explanation of circuit diagram, observations, calculations for verification of laws of combination of resistances

Primary Electrical Cell

This is an episode from Current Electricity series; covers how chemical energy is converted into electrical energy, simple voltaic cell composition, chemical reaction and formation of positive and negative e-terminals at copper and zinc, defects of simple voltaic cell, polarisation, local action ways to reduce the defects, potential difference created, composition, voltage and working of leclanche cell and daniel cell

Potentiometer

This is an episode from Current Electricity series; covers the design of a potentiometer, which helps in understanding the principle of potentiometer, it shows how a long length of wire is placed on a wooden board, requisites of a potentiometer wire its diameter and material, shows how measurements of selected length of wire are taken on a potentiometer using the attached scale, observations to study the variations in potential drop with length of a wire for a steady current, a potential difference versus length graph is plotted the straight line shows the potential drop per unit length also called potentiometer constant