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
Example
When solving parallel resistor circuits, you are most often given the voltage of the source (V_{T}) and the value of each resistor. Given that information, you can use the equations for parallel resistance to calculate the total resistance (R_{T}) 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  Copyright © SweetHaven
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Revised: June 06, 2015