Question

If three resistance are connected in series R1=R2=R3=5ohm . Find its equivalent resistance.

Answer 1

Equivalent resistance is 15

Answer 2

In a series connection the equivalent resistance is given by the sum of each of the resistances.

Rs=R1 + R2 + R3 +.......+Rn

Here Rs = r1 + r2 + r3
Rs = 5Ω +5Ω + 5Ω
Therefore Rs= 15Ω