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Electrical and Electronic
The
whole thing of Electrical and electronics engineering is a matter of a flow of
electrical charge and electricity is the flow of electric current along a
conductor. This electric current takes the form of free electrons that transfer
from one atom to the next.Without electricity it will be dark all over the
world at night. We can call that electricity is a force of nature. Now a day’s
electricity is a part of our life. There are three primary electrical
parameters: volt, ampere and ohm.
Volt
Ampere
When one coulomb (or 6 x 1018 electrons) flows past a given point on a conductor in one second, it is defined as a current of one ampere. Flow rate of electronic current defines as the ampere. Symbol of ampere is (A).
Ohm
Three things determine the amount of resistance in a conductor: its size, its material and its temperature. A conductor’s resistance increases as its length increases or diameter decreases. The more conductive the materials used, the lower the conductor resistance becomes. A rise in temperature will generally increase resistance in a conductor. The ohm is the unit of resistance in a conductor. Symbol of ohm is (Ω).
Ohm’s Law defines the correlation between electric current (I), voltage (V), and resistance (R) in a conductor.
Ohm’s Law can be expressed as: V=I× R
Where V= Volts, I = Amps, R = ohms
Watt
Watt is the unit of power. 1 watt defined as the energy consumption rate of one joule per second. One watt as also defined as the current flow of one ampere with voltage of one volt.
Volt
The volt is the amount
of electromotive force required to push a current of one ampere through a
conductor with a resistance of one ohm. The pressure that is put on free
electrons that causes them to flow is known as electromotive force (EMF).
Volt is the unit of pressure.
Symbol of volt is (V).
When one coulomb (or 6 x 1018 electrons) flows past a given point on a conductor in one second, it is defined as a current of one ampere. Flow rate of electronic current defines as the ampere. Symbol of ampere is (A).
Ohm
Three things determine the amount of resistance in a conductor: its size, its material and its temperature. A conductor’s resistance increases as its length increases or diameter decreases. The more conductive the materials used, the lower the conductor resistance becomes. A rise in temperature will generally increase resistance in a conductor. The ohm is the unit of resistance in a conductor. Symbol of ohm is (Ω).
Ohm’s Law defines the correlation between electric current (I), voltage (V), and resistance (R) in a conductor.
Ohm’s Law can be expressed as: V=I× R
Where V= Volts, I = Amps, R = ohms
Watt
Watt is the unit of power. 1 watt defined as the energy consumption rate of one joule per second. One watt as also defined as the current flow of one ampere with voltage of one volt.
1W = 1J / 1s, 1W = 1V × 1A
Ohm’s Law
Ohm’s Law defines the correlation between
electric current (I), voltage (V), and resistance (R) in a conductor.
Ohm’s Law can be expressed as: V = I × R
Ohm’s Law can be expressed as: V = I × R
Where: V = volts, I = amps, R = ohms
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