# Parallel resistors

Components with 2 terminals (pins/wires) are connected in parallel when each of their terminals are connected to just one of the other component’s terminals. Each electrical connection point is called a node.

## Basic properties Two equal value parallel resistors will conduct twice the current for a given voltage by providing half the equivalent resistance diagram by Electronzap Electronzapdotcom
• Conductance – Siemens – Mhos More in depth page covering conductance.
• Equivalent resistance is less than the lowest value parallel resistor. Their conductance adds up.
• Equal value parallel resistors are the easiest to calculate. The equivalent resistance is a fraction of the value of each equal value parallel resistor. 1/2 for 2 parallel resistors, 1/3 for 3 parallel resistors, etc. For example, two || (parallel) 1,000Ω resistor will look like a single 500Ω resistor to the rest of the circuit. While three || 1KΩ resistors will look like a single 333Ω resistor.
• Since more than one resistor is providing current, they also split up the heat generation.
• Formula is (1/Req) = (1/R1)+1/R2)….+(1/Rn)