Current Electricity

In this topic, we will explore the concept of electric charges. It also explains the like and unlike charges with experiments and examples. It also mentions the gold-leaf electroscope, convention and polarity of the charges in detail.

This topic explains electric current and current density. Positive and negative charges along with the units of electric current are also described here.

This topic deals with the concept of electric current, along with its expression and unit. We will also know the relation among charge, current and time. It describes the sources of direct current using illustrative examples.

In this topic, we will learn about an electric circuit. Here, it explains the symbols, properties and components of the electric circuit. We will also learn to draw a circuit diagram.

This topic explains electric potential along with potential due to a point charge. We will also learn about potential due to electric dipole.

In this topic, we will learn that in Ohm’s law the current flowing through a conductor is directly proportional to the potential difference at its ends. The constant of proportionality is called resistance. Variable resistance is used to regulate current without changing voltage.

This topic deals with the concept of resistance and factors affecting it including length and area. It shows the graph between resistance and area. It also mentions the formula used to calculate the resistance.

This topic discusses how electrical energy is produced. It also talks about the necessity, essentiality and uses of energy. Further, it also explains different forms of energy in detail with examples.