Delmar's Electricity Unit 2, Electrical Quantities and Ohms Law
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What is the formula for computing ressistance using Ohm's Law?
R = E / I
What is a Coulomb?
The charge transferred by a current of 1 ampere in one second.
Define an Ampere.
The ampere is a measurement of the amount of electricity that is flowing through a circuit. One ampere of current flows through a wire when 1 couloumb flows past a point in one second.
Voltage is defined as the potential difference between two points of a conducting wire carring a constant current of 1 ampere where the power dissipated between these points is 1 watt. It is the force that pushes the electrons through a wire and is often referred to as electrical pressure.
Define an Ohm.
An Ohm is the unit of ressistance to current flow. It is the amount of ressistance that allows 1 amphere of current to flow when the applied voltage is 1 volt.
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