Passive Discrete - Resistors

Back to basics (covered in Deciphering Schematics):

Resistors, capacitors, and inductors are primary types of passive discrete components. In their most basic form, they come with two-terminals, through-hole or SMD. The chart below shows the types of resistors:

Resistors oppose (restrict, limit) the flow of current and are employed to control current and manage voltage levels in a circuit. The relationships between resistance, voltage and current conform to Ohm’s Law such that current is proportional to the applied voltage and inversely proportional to the resistance (i.e., V = IR).