1. The Results
Engineers use Ohm's law to determine the effectiveness of electrical circuits. They can, for example, calculate how power
transmission can be affected by different arrangements of the service components such as wiring, capacitors and resistors.
Electrical voltage
- Electrical voltage :is the electric force
or pressure cause current flow in a
circuit.
- The voltage determines the direction
of the movement of cargo between
two points in an electric field.
-The voltage is reason or cause
electrical current without voltage is
not electric current.
- In metal wires are current in the wire
proportional proportional is directly
proportional with the voltage.
- Measuring unit voltage is volt.
Electric current
- The electric current is only a stream
of free electrons that move and pass
through Connector for electric
current.
- Ohm's law States that the current
intensity in any resistor is the voltage v
alue practices divided by the value of
resistance: I=V/R
- To pass an electric current in a wire
or a service must be a difference
voltage (electrical pressure)
- measured in a unit called the ampere.
Resistance
- Called the ohmic resistance (from the
word OM) when they are perfect in
the sense that the value is not changed
by changing the voltage does not
change current intensity.
- The resistance element many use in
electronic circuits and their utility in
this circuit it controls current and
voltage.
- is measured in units called ohms,
symbolised by the symbol (Ω).
- The correct choice is determined by
the resistance in the circuit where the
value of an ohm (OHM) and wattage
(WATT).
Introduction
•It is a fundamental principle in
electricity, called this name by taking
the German physicist ' George Simon
ohm. Ohm's law is the law
demonstrates the relationship
between three variables that control
the intensity of electric current
through an electric connector
describes the relationship between
both (V) voltage reflecting the
strength of the flow of electric
charges. And (R) resistance that
resists this flow. The real result of
this flow is current (I).
This Act provides that the voltage
between the ends of the metal
carrier is directly proportional to
the intensity of electric current
passing through it.
Conclusion
•See Ohm's law is very important and reliable account three variables determines the Ohm's law the relationship
between current intensity and tension between bound connector.
References
• http://www.phys4arab.net/vb/showthread.php?t=23856
• http://www.uae7.com/vb/t72980.html
• http://www.qalqilia.edu.ps/resistor.htm
• http://ar.wikipedia.org/wiki/%D9%82%D8%A7%D9%86%D9%88%D9%86_%D8%A7%D9%88%D9%85