Electricity

Relationship Between Current and Potential Difference Ohm’s Law The relationship between the current passing through 2 points in a conductor and the potential difference between the 2 points is given by Ohm’s law. Ohm’s Law states that the current flowing in the metallic conductor is directly proportional to the potential difference applied across it’s ends, … Read more

Potential and Potential Difference The electric potential V at a point in an electric field is the work done to bring a unit ( 1 Coulomb) positive charge from infinity to the point. The potential difference (p.d.) between two points is defined as the work done in moving 1 Coulomb of positive charge from 1 … Read more

Current An electric current I is a measure of the rate of flow of electric charge Q through a given cross-section of a conductor. In other words, current is the measure of how fast the charge flow through a cross-section of a conductor. Equation Direction of Current Conventionally, the direction of the electric current is … Read more

Electric Field An electric field is a region in which an electric charged particle experiences an electric force. Electric field is represented by a number of lines with arrows, called electric lines of force or electric field lines. The direction of the field at a point is defined by the direction of the electric force … Read more

Electric Charge There are two kinds of electric charge, namely the positive charge and the negative charge. Like charge repel each other. Unlike charge attract each other. A neutral body can be attracted by another body which has either a positive or negative charge. The SI unit of electric charge is Coulomb (C).ExampleCharge of 1 … Read more

Fundamental of Electricity Electric Charge Electric Field Effect of Electric Field Effect of Electric Field on a Ping Pong Ball Coated with Conducting Material A Candle Flame in an Electric Field Current Potential and Potential Difference Relationship Between Current and Potential Difference Resistance Series Circuit and Parallel Circuit Resistance in series and parallel Circuit Comparing … Read more