Series And Parallel connection - class 10 Physics

To analyze a circuit knowledge of series and parallel connection is very important. By the knowledge of this we can find how much current is going through the resistor or any appliance. And in turn we can measure the power, heat energy developed etc. So let us study one by one.

Series connection

Lets consider the circuit where resistor are in series connection.

Here resistors R₁ and R₂ are connected in series combination. A voltage source ( V ) is connected across them delivering a current I. The same current is flowing through both resistors R₁ and R₂. As current passes through each Resistors, Produces a voltage across those resistors. That is voltage developed across R₁ and R₂ are IR₁ and IR₂ Respectively. So we can conclude as

• In series connection current will be same and voltage will be different

We can write total voltage

The equivalent resistance
 ;

Using this we can replace circuit as

Parallel conncerion

 Consider the circuit with parallel connection of resistors

In this circuit we can observe that voltage source is delivering the current I. It is then split into I₁and I₂. This values of I₁and I₂ depend upon the values of Resistors. And we can also observe that the voltage across both the resistors are same.

So we can write, In parallel connection

• Current will be different and voltage will be same.

There fore , Total current
 



OR

We will cover the numerical of this portion in a separate section.