How can I draw a series circuit?
Resistors are like in a "sequence".
A series circuit in which the resistance is combined through the equation,
#R_1,R_2,R_3,...,R_n#is the resistance of resistors #1,2,3,...,n#.
The resistors in this circuit are arranged through straight lines, and are not cut off from each other. They are placed like dominoes.
Here is a picture: