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# Ag Power Web Enhanced Course Materials

### Electrical

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## 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 ). Use the formuls explained on the left side of the page to calculate the current. 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

Click the term to see examples of Voltage and Resistance.