Basic Circuit Analysis
This is an example of a very general type of parallel circuit—not just a battery and three resistors connected in series. We don't know exactly what the Source is. It might be a battery, an electrical generator, or any other source of electrical energy. Likewise the loads aren't necessarily resistors. They might be lamps, electronic equipment, or any other appliance that presents a fixed resistive load.
The important point is that the Source is providing 24V. This is a parallel circuit, so you can be confident that the source is providing 24V to each of the loads.
Finding the Total Current of a Parallel Resistor Circuit
When solving parallel resistor circuits, you are most often given the voltage of the source (VT) and the value of each resistor.
Given that information, you can use the equations for parallel resistance to calculate the total resistance (RT) of the circuit.
Knowing the total voltage and resistance, you can use Ohm's Law to find the total current: IT = VT/RT
|David L. Heiserman, Editor||
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Revised: June 06, 2015