Electricity

If we insert any iron rod through the solenoid, we can get more powerful magnetic field that the solenoid has. During the flow of current,…

We can increase the magnetic field intensity by coiling the above-mentioned wire (see the figure). Due to the flow of the current through the coil,…

Oersted invented the magnetic effect of current. A magnetic field is the magnetic effect of electric currents and magnetic materials. The magnetic field at any…

In the previous section you were informed about the dangers of electricity. In the present section, we will learn about the safe uses of electricity.…

Electricity plays a very important role in our daily lives. Though electricity is very useful to us, it can also be very dangerous in careless…

The circuit in which the electric components are arranged in such a way that one terminal of all the components are joined at a common…

The circuit in which the electric components are connected one after another in a single loop is called a series circuit. A series circuit is…

The reciprocal quantity of resistance is called conductance. Like that, the reciprocal quantity of specific resistance is called conductivity. Conductivity is expressed by the letter…

Electrical resistivity (also known as resistivity, specific electrical resistance, or volume resistivity) is an intrinsic property that quantifies how strongly a given material opposes the…

At constant temperature, the resistance of a conductor of particular material varies proportionately with the length and inversely with the area of cross section. Therefore,…