Why Does Adding Resistors In Parallel Decrease Resistance. Here is a formula for calculating resistors in parallel. It decreases the resistance.
If you like to use the water hose analogy you are draining the tub battery power source. In a simple circuit the resistance can be lowered by adding resistors in parallel. Say you have r1 and r1 in parallel.
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.
The reason adding resistors in parallel decreases overall resistance is that adding resistors in parallel increases the effective cross sectional area of the circuit. Resistors in parallel when resistors are connected in parallel the supply current is equal to the sum of the currents through each resistor. You can also reduce resistance by. If you like to use the water hose analogy you are draining the tub battery power source.