**Resistances in Series**

**Definition**
:-

Imagine two or
more resistors in series, i.e. connected one after another so that the same
current flows through them. The total resistance of the
collection is the sum of individual resistances.

Suppose a current
**
i** flows through the resistances. The potential difference V between the points P
and Q is the sum of voltage differences across the sequence of resistors, i.e.,
i( R1 + R2 + R3 +.............+ Rn ), and the current
flowing is i, so that the resistance is

**( V / i )
= R = R1 + R2
+ R3 + .............. + Rn
.......................(1)**

**Click
here for Calculations**

This is the well known formula
for the total resistance of n resistors in series.

**Click
here Animation**

Resistance
Calculation | Resistance In
Parallel | Kirchhoff's Law |
Electric Circuit