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Language: English
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Training Time: 15 minutes
Compatibility: Desktop, Tablet, Phone
Based on: Industry Standards and Best Practices
Languages: English
Electricity is a form of energy, and when considering circuits, electricity is defined as a flow of electrons. The flow of electrons is called current. Current flow occurs under the influence of a charge difference that is called voltage. Resistance is the tendency of a component to hinder the flow of current. This course briefly reviews the aspects of atomic structures that allow the flow of electricity and then describes the relationship between current, voltage and resistance in an electrical circuit.
Circuits and Power
View Course
Electrical Meters and Measurements
Electrical Wiring and Connections
Electromagnetic Induction
Hand Tools for Electrical Work
The following key questions are answered in this module:
What type of charged particles orbit around the nucleus of an atom? The particles that orbit around the nucleus of an atom are called electrons.
What is an electrical current in a conducting material? An electrical current is the movement of mobile electrons under the influence of a charge imbalance.
What is voltage? Voltage is the term applied to an imbalance of electrical charge.
Are resistance and resistivity the same? No. Resistivity is an inherent property of a material and is not affected by the size or amount of material. Resistance is a property of a given component that is affected by its resistivity, but it also affected by the size of the component.
How are current, voltage and resistance related in an electrical circuit? Current, voltage, and resistance are related by Ohm's law which states that current is proportional to the voltage in a circuit and inversely proportional to the resistance in a circuit.
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