Ag Power Web Enhanced Course Materials
Electrical
- Introduction
- Lecture Notes
- Circuit & Relay Demonstrations
- Animated Examples
(Coming Soon) - Job Sheets
- Submitting Job Sheets
- Terms/Definitions
Reference Links
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If you experience any problems with the site, please contact Pete Hoffman immediately so corrections can be made. Pete can be reached on campus, via email at phoffman@swtc.edu or by phone at 1.800.362.3322 ext 2727.
Related Lecture Notes
- Basic Laws & Facts
- Electrical Units of Measurement
- Electrical Component
Concepts - Ohms Law
- Electrical Symbols
- Resistor Color Codes
- Conductors/Wire
- Electrical Troubleshooting
Circuits
Meters
Ohm's Law - Calculating Current
What is Current (I)?
Current is the movement of electrons in a circuit. Electric current
is the movement of electrons from one atom to another in a conductor.
Current is the movement of electrons in a conductor. The more electrons that move in a conductor the more current you have in the circuit. The name for current is AMPERE (I).
(I = E ÷ R) |
Current (I) on the equation is missing and you have the (E) and (R) left. Because they are divided by the horizontal line that means divide the two values. |
 |
This is a simple circuit with a potential
of 12 volts (12 E)
and a resistive load of 1 Ohm (1 Since we know the battery is suppling 12 Volts (E), and there is a resistive load of 1 Ohm (R) placed in series, the current will be: I = 12(E) divided by 1(R) or I = 12 |
).
Use the formuls explained on the left side of the page to
calculate the current.Click the term to see examples of Voltage and Resistance.