1. Be able to interpret a circuit diagram?
2. Determine the equivalent resistance of circuits having two or more resistors.
The schematic diagram is simply an electrical map. Schematic diagrams are used by electrical engineers to describe the electron source, electron path, and components of a circuit.
The battery is displayed as a long line opposite a short line
Switches can be closed or open, push button, rotary, or switched.
The above diagram is an example of simple circuit. Can you find the eight different components of this circuit?
To find the overall resistance, the first step is to calculate the resistance of the parallel elements. You already know that the combined resistance of two 1 resistors in parallel is 0.5 , so the total resistance in the circuit is 1+0.5=1.5 . The power supply current is:
Last modified: December 20, 2002