Why Does Adding Resistors In Parallel Decrease Resistance. The reason adding resistors in parallel decreases overall resistance is that adding resistors in parallel increases the effective cross sectional area of the circuit. When hooking resistors in parallel you are increasing the cross sectional area of the resistance path.
If you rearrange you get. If you like to use the water hose analogy you are draining the tub battery power source. Resistors in parallel when resistors are connected in parallel the supply current is equal to the sum of the currents through each resistor.
The two resistors have the same.
If you like to use the water hose analogy you are draining the tub battery power source. Parallel resistance gives us a value known as conductance symbol g with the units of conductance being the siemens symbol s. Even though the added branches offer resistance to the flow of charge the overall resistance decreases due to the fact that there are additional pathways available for charge flow. Note that the equivalent resistance is always less than the smallest resistor in the parallel network so the total resistance r t will always decrease as additional parallel resistors are added.
