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Electricity (8. Electronic components (Variable resistors (Thermistor,…
Electricity
1.Electric circuits
Electric circuits: An electric circuit ls a route
and electrons circulate around this route. It consists
of a generator, a wire conductor, a switch and a receiver such as a bulb, motor or bell.
Electric currents: t refers to the flow of electrons around a circuit
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Electrical resistance
The electrical resistance of a material is a measure of the degree to which the matenal opposes an electric current flowing through lt.
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2. Electric quantities
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2.2 Electric current
Electric current is the charge, or number of electrons, that flows through a conductor per second:
Q
I=--
T
Electric current is measured in amperes or amps (A)
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4. Types of current
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2.2. Alternating current
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Finally, it increases to reach 0 V once again
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5. Electric energy
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Electric power
Electric power is the capacity of an electric receiver to transform
energy in a fixed period of time.
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