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what is difrence between ac and dc...could u please explain me the exaact difference

Originally Posted by haitham ok

what is difrence between ac and dc...could u please explain me the exaact difference

ac stands for alternating current and dc stands for direct current. ac is the current whose magnitude changes continuously and direction changes periodically.
dc is the current whose magnitude and direction is constant. it has no peak value.
the shock of an ac supply is attractive and more dangerous whereas shock of dc is less dangerous and repulsive.
the peak value of 220 volt ac is 311 volt whereas the peak value of 220 volt dc supply is 220 volt only.
ac can be step up or step down, recitified, and converted to dc.
dc can not be step up or step down.
ac can not be stored in battery but dc can be stored.
ac is used in transmission purposes while dc is used for household purposes like in watch calculators etc.

Hello There!
AC is an alternating current (the amount of electrons) that flows in both directions and DC is direct current that flows in only one direction; the product that is flowing being electrons.
AC power is what fuels our homes. The wires outside of our house are connected at two ends to AC generators.
DC is found in batteries and solar cells. Both AC and DC employ magnets to repel electrons.


Best wishes...

Originally Posted by haitham ok

what is difrence between ac and dc...could u please explain me the exaact difference

dear friend,

AC and DC is that AC is an alternating current (the amount of electrons) that flows in both directions and DC is direct current that flows in only one direction; the product that is flowing being electrons.

AC power is what fuels our homes. The wires outside of our house are connected at two ends to AC generators. DC is found in batteries and solar cells.

thanks

Originally Posted by haitham ok

what is difrence between ac and dc...could u please explain me the exaact difference

dear friend,

AC and DC is that AC is an alternating current (the amount of electrons) that flows in both directions and DC is direct current that flows in only one direction; the product that is flowing being electrons.

AC power is what fuels our homes. The wires outside of our house are connected at two ends to AC generators. DC is found in batteries and solar cells.

thanks

Originally Posted by haitham ok

what is difrence between ac and dc...could u please explain me the exaact difference

Difference between AC and DC -

AC Stands for Alternating Current

DC Stands for Direct Current.

In AC, electrons keep switching directions, sometimes going forwards and then going backwards But in DC, the electrons flow steadily in a single direction, or forward.

AC is an alternating current that flows in both directions and DC is direct current that flows in only one direction.

AC can be converted to DC Easily Using a Devise Called Rectifier But You cant converted DC into AC.

Direct Current or DC is current with unique direction. When a resistor is connected across the terminals of a battery, a current is established in the circuit. It goes from the positive terminal to the negative terminal via the external resistor. The magnitude of the current also remains constant. It is direct current.
Alternating current or AC is the current in a resistor or in any other element whose direction changes alternately. It can be produced from a source that can generate varying emf for example AC dynamo.

hi

AC, DC is the main fundamental of Electric.

AC- ALternating current

DC- Direct current

Ac is flow both currents
]
but Dc flows only one direction

this is the basic difference................

AC means Alterate current in which frequency of current change alternate.
DC means Direct current in which frequency of current remain constant.

Two general examples i am giving you here-

1-AC is that which comes in our home through wires and DC which we get through torch cell.

2-AC doesn't charge the battery but DC charge.

Dear Friend,

AC and DC is that AC is an alternating current (the amount of electrons) that flows in both directions and DC is direct current that flows in only one direction; the product that is flowing being electrons. AC power is what fuels our homes. The wires outside of our house are connected at two ends to AC generators. DC is found in batteries and solar cells. Both AC and DC employ magnets to repel electrons.A further difference between AC and DC is that they can carry differing amounts of energy. DC batteries are designed for a specific voltage, which cannot travel very far without losing energy. The strength of the energy from AC can be controlled however, by the use of a transformer, which can either increase or decrease the energy output.AC is good for motors and lights not much else. DC powers every piece of electronics in you house.

DC is unidirectional current flow, current that flows in one direction only.

AC is a current flow that alternates directions. first traveling in one direction then reversing and traveling in the other direction.

That is the only difference between the two. Does the current change direction or not? If it changes direction periodically than it is AC if it always travel in the same direction its DC.



You can have DC sine wave so long as the voltage never crosses zero and changes polarity which would change the direction of current flow. This is what happens when you bias an AC voltage with a DC voltage, the two voltages add together and if the DC voltage is high enough the AC voltage can't reduce the sum total of the two voltages enough to cause a polarity change (cross zero such as going from pos to neg). Thus you have a varying DC voltage that looks like a sine wave but the current is always traveling in the same direction.

AC:: ALTERNATE CURRENT ::

1.Current that alternates in the direction that it flows
2.Due to large power loss we can not transmit energy over long distances
3.Electrons keep switching directions, sometimes going "forwards" and then going "backwards."
4.AC is less dangerous then DC.

DC :: DIRECT CURRENT ::

1.Current flows only in one direction
2.Direct current is used to transmit energy over long distances
3.The electrons flow steadily in a single direction, or "forward."
4.DC is dangerous

Originally Posted by haitham ok

what is difrence between ac and dc...could u please explain me the exaact difference

.
hello
here is the difference
In alternating current ( AC or ac ) the movement of electric charge periodically reverses direction. In direct current (DC), the flow of electric charge is only in one direction.
[ 2 ] AC is the form in which electric power is delivered to businesses and residences. The usual waveform of an AC power circuit is a sine wave . In certain applications, different waveforms are used, such as triangular or square waves . Audio and radio signals carried on electrical wires are also examples of alternating current. In these applications, an important goal is often the recovery of information encoded (or modulated ) onto the AC signal.

Ac and Dc are two terms which are used extensively in electrical studies. These words are very commonly used by people in their day to day activities. AC is Alternating current and DC is direct current. AC current is one whose magnitude and direction changes periodically. These are usually used for transmission and distribution purposes. DC is the one which a constant direction and magnitude. They are commonly found in constant power sources like batteries.

Originally Posted by haitham ok

what is difrence between ac and dc...could u please explain me the exaact difference

hii friend..here is the difference between ac and dc current.........

Electricity flows in two ways, either in alternating current (AC) or in direct current (DC). The word electricity comes from the fact that current is nothing more than electrons moving along a conductor, like a wire, that have been harnessed for energy. The difference between AC and DC has to do with the direction in which the electrons flow.

In DC, the electrons flow steadily in a single direction, or "forward." In AC, electrons keep switching directions, sometimes going "forwards" and then going "backwards." The power that comes from wall outlets is AC.

Electricity is a very different energy source than heat or light. In nature, electricity only rarely occurs, in some animals or with lightning. In the search to create electrical energy, scientists discovered that electrical and magnetic fields are related. A magnetic field near a wire causes electrons to flow in a single direction along the wire because they are repelled and attracted by the north or south poles. Thus, DC power from a battery was born, primarily attributed to Thomas Edison's work and promotion.

Another scientist, Nikola Tesla, preferred AC because it travels farther without losing energy and could transfer different amounts of power. Instead of applying the magnetism along the wire steadily, he used a magnet that was rotating. When the magnet was oriented in one direction, the electrons flowed towards the positive, but when the magnet's orientation was flipped, the electrons turned as well. AC generators gradually replaced Edison's DC battery system because AC is safer to transfer over the longer distances and can provide more power.

Another difference between AC and DC involves the amount of energy it can carry. Each battery is designed to produce only one voltage, and that voltage of DC cannot travel very far until it begins to lose energy. AC voltage from a generator in a power plant can be bumped up or down in strength by another mechanism, called a transformer.

Sir,
Difference between AC and DC -

AC Stands for Alternating Current

DC Stands for Direct Current.

In AC, electrons keep switching directions, sometimes going forwards and then going backwards But in DC, the electrons flow steadily in a single direction, or forward.

AC is an alternating current that flows in both directions and DC is direct current that flows in only one direction.
this is the basic difference................


AC can be converted to DC Easily Using a Devise Called Rectifier But You cant converted DC into AC.

AC or alternating current is literally a current that alternates in the direction that it flows.

Alternating current can be with some direction just as a vector quantity.

DC is direct current and as is implied by the name the current flows only in one direction.

So DC current is a steady current which we use in our homes.

my question is , what is exact difference of flow of electron in AC & DC ?

ac stands for alternating current
and dc stands for direct current.
ac is the current whose
magnitude changes continuously
and direction changes
periodically.
dc is the current whose
magnitude and direction is
constant. it has no peak value.
the shock of an ac supply is
attractive and more dangerous
whereas shock of dc is less
dangerous and repulsive.
the peak value of 220 volt ac is
311 volt whereas the peak value
of 220 volt dc supply is 220 volt
only.
ac can be step up or step down,
recitified, and converted to dc.
dc can not be step up or step
down.
ac can not be stored in battery
but dc can be stored.
ac is used in transmission
purposes while dc is used for
household purposes like in
watch calculators etc.

ac stands for alternating current and dc stands for direct current. ac is the current whose magnitude changes continuously and direction changes periodically.
dc is the current whose magnitude and direction is constant. it has no peak value.
the shock of an ac supply is attractive and more dangerous whereas shock of dc is less dangerous and repulsive.
the peak value of 220 volt ac is 311 volt whereas the peak value of 220 volt dc supply is 220 volt only.
ac can be step up or step down, recitifie

hy,
ac stands for alternating current and dc stands for direct current.
your transformer works on ac....and at your dc , dc motor works.

hy,
ac stands for alternating current and dc stands for direct current.
your transformer works on ac....and at your dc , dc motor works.

hello friend...!!

Difference between AC and DC :-

1.AC Stands for Alternating Current where DC stands for direct current.


2.In AC, electrons keep switching directions, sometimes going forwards and then going backwards But in DC, the electrons flow steadily in a single direction, or forward.

3.AC is an alternating current that flows in both directions like a sign wave and DC is direct current that flows in only one direction.

4.AC can be converted to DC Easily Using a Devise Called Rectifier But You cant converted DC into AC i.e.conversion of DC to AC is impossible.

thanks.

hello friend...!!

Difference between AC and DC :-

1.AC Stands for Alternating Current where DC stands for direct current.


2.In AC, electrons keep switching directions, sometimes going forwards and then going backwards But in DC, the electrons flow steadily in a single direction, or forward.

3.AC is an alternating current that flows in both directions like a sign wave and DC is direct current that flows in only one direction.

4.AC can be converted to DC Easily Using a Devise Called Rectifier But You cant converted DC into AC i.e.conversion of DC to AC is impossible.

thanks.