ac electric circuits

Electric Circuits - Your everyday experiences have familiarised you with many electric circuits. Let us take an example of an electric circuit with a battery (a source of electricity), toaster and a switc..

Your everyday experiences have familiarised you with many electric circuits. Let us take an example of an electric circuit with a battery (a source of electricity), toaster and a switc..

AC Circuit Containing Resistance only - Let an AC source of EMF E be connected to a pure resistance R. The instantaneous EMF from the source is given by E = E o sin w t From Ohm's law I = E/R = E o /R . sin w t I = I o sin w t The variation of E and I shows that both r..

Let an AC source be connected across pure inductive element. If E = E o sin w t then, q = EC = CE o sin w t I = I o cos w t Here I o = E o C w = E o C w plays the role of a resistance and is known as capacitive reactance X c ...

Let an AC source be connected across pure inductive elemen..

An electric fuse is a device which is used to limit the current in an electric circuit. The use of a fuse is to safeguard the circuit and the appliances connected in the circuit from being damage..

In many electrical circuits, Ohm's law cannot be applied. This happens when there is more than one source of emf in the circuit or when resistors are connected in a complicated manner. To solve such complex circuits, Gustav Robert Kirchhoff developed two laws..

Electric Circuits and Kirchhoff's Rules - In many electrical circuits, Ohm's law cannot be applied. This happens when there is more than one source of emf in the circuit or when resistors are connected in a complicated manner. To solve such complex ..

The devices which deliver electricity are called the 'sources'. Lamps, electric engines, etc. which consume electricity are called loads. Switches are used to switch the loads on and off whenever necessary. Hence, the source, the loads, and the switches are conne..

>The earth wire is much thicker in size and is made of copper. One end of it is connected to a copper plate buried deep under the earth. The earth connection is made to the electric meter and then to the main switch. In our homes, we receive supply of electric power through a ma..