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A form of energy resulting from existence changed of charged particles (such as electrons or protons ) , either statically as an accumulation of charged or dynamically as a currentA fundamental form of energy observable in positive and negative forms that occurs naturally ( as in lightning) or is produced ( as in a generator and that is expressed in terms of movement and interaction of electrons
The set of physical phenomena associated with the presence and flow of electric charge, electricity gives a wide variety of well- known effects,such as lightning,static electricity,electromagnetic induction and electricity.
Voltage, is the potential energy of an electrical supply in the form of an electrical charge. Voltage can be thought of as the force that pushes electrons through a conductor and the greater the voltage the greater is its ability to “push” the electrons through a given circuit. Voltage is the difference in charge between two points
Current, is the movement of or flow of electrical charge and is measured in Amperes. It is continuous and uniform flow (called a drift) of electrons around a circuit that are being “pushed” by the voltage source. Current is the rate at which charge is flowing
CURRENT
Resistance , of a circuit is its ability is its ability to resist or prevent the flow of current through itself making it necessary to apply a greater voltage to the electrical circuit to cause the currrent to flow again Resistance is a material’s tendency to resist the flow of charge (current)
RESISTANCE
The best analogy to understand what are their differences,is the garden hose.When you turn on your garden hose,voltage is the pressure that is pushing the water.And that water flow will act as the current,the actual electron flow.And when you finally done your thing in the garden hose,of course you will turn it off.With the help of the resistance as the valve,it will resist or prevent the flow.
They also differ on how they are meassured.Voltage is measured in volts.Resistance is measured in ohms.And current is measured in amperes.
What are Two Types of Current ?
Direct CurrentDirect current is electric current that only flows in one direction.A common place to find direct current is in batteries.A battery is first charged using direct current that is then transformed into chemical energy.
Alternating CurrentAlternating current, as the name implies, alternates in direction. Alternating current is used for the production and transportation of electricity. This is because when electricity is produced in large scale, such as in a power plant, it has dangerously high voltage.
Amount of energy that can be carriedAC-Safe to transfer over longer city distances and can provide more power.DC- Voltage of DC cannot travel very far until it begins to lose energy.
DirectionAC-It reverses its direction while flowing in a circuit.DC- It flows in one direction in the circuit.
Cause of the direction of flow of electronsAC-ac Rotating magnet along the wire.DC- Steady magnetism along the wire.
CurrentAC-It is the current of magnitude varying with timeDC- is the current of constant magnitude
Flow of ElectronsAC-Electrons keep switching directions - forward and backward.DC- Electrons move steadily in one direction or 'forward'.
The Three Components of Electric Circuit
SOURCE
Many electronic items can't use household A.C. power directly; they might use a converter to change A.C. to D.C. at a safe voltage. The converter may be built into the electronic device, or it might be the familiar A.C. adapter that plugs into the wall
WIREEvery circuit needs to carry electric current from one part to another. Wiring performs this job. It comes in a variety of thicknesses, called gauges, that determine how much current it can carry. Typically, wire consists of a copper strand insulated with a thin plastic jacket. The insulation prevents wires from shorting out against each other, and keeps higher voltages safely contained.
LOAD A load is a generic term
for the part of your circuit that consumes power. It's the part of your circuit that performs some action. Loads use power in the form of voltage and current, so the other parts of your circuit need to be rated to handle the power used by your load.
