electricity

3. 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 current
A 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

4. 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.

7. 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

8. 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
C
U
R
R
E
N
T

9. 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)
RESISTANC

10. 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.

11. They also differ on how they
are meassured.Voltage is measured
in volts.Resistance is measured in
ohms.And current is measured in
amperes.

12. What are
Two Types of
Current ?

13. Direct Current
Direct 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.

14. Alternating Current
Alternating 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.

15. Amount of energy that can be carried
AC-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.
Cause of the direction of flow of electrons
AC-ac Rotating magnet along the wire.
DC- Steady magnetism along the wire.
Direction
AC-It reverses its direction while flowing in a circuit.
DC- It flows in one direction in the circuit.

16. Current
AC-It is the current of magnitude varying with time
DC- is the current of constant magnitude
Flow of Electrons
AC-Electrons keep switching directions - forward and
backward.
DC- Electrons move steadily in one direction or
'forward'.

17. The Three
Components
of
Electric Circuit

18. 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

19. WIRE
Every 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.

20. LOA
D 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.