Dc Series. And Parallel Circuits

DC SERIES AND PARALLEL CIRCUITS

1)Series Circuits

When the resistors are connected end to end ,so that they form only one path to flow current ,

Then the resistors are said to be connected in series and such Circuits are called as series Circuits

If three Resistors,R1,R2,R3, are connected in series then the equivalent Resistance

Is equal to

Equivalent Resistance R=R1+R2+R3

If no of resistors resistors connected in series then equivalent Resistance

R=R1+R2+R3+R4+---------+Rn

In series Circuits

Total Voltage is equal to the Sum of Voltage across the each resistors i.e V=V1+V2+V3
The current(i) always equal in the series Circuits

2) Parallel Circuits

When a number of resistors are connected in such a way that one end of each of them is joined to a common point and other ends being join to another common point. Then the resistors are said to be connected in parallel and such Circuits are known as Parallel Circuits.

If resistors R1,R2,R3 Are connected in parallel then the equivalent Resistance

1/R=1/R1+1/R2+1/R3

If there are n no of resistors are connected in parallel then equivalent Resistance is equal to

1/R=1/R1+1/R2+1/R3+---------1/Rn

In Parallel Circuits