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Direct current has no frequency, it has voltage. also it has current that is measured in Amperes which is dependable of the resistance of the circuit. Alternating current has frequency because the electricity flows alternatively on both directions. If the frequency of AC is 50hz/s it means that the electricity flows forwards and backwards 50 times per second.
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Electrically how is AC different from DC current?
DC is direct current, current travels in one direction. AC is alternating current, current changes direction twice per cycle. 60 Hertz would change direction 120 times per second.
WHAT THE RELATIONSHIP BETWEEN THE HERTZ AND CURRENT?
The domestic electricity supply is alternating current. Instead of a steady flow of electrons through your appliances, there is a movement in one direction followed by a movement in the opposite direction. For heating and lighting, alternating current has exactly the same effect as a direct current. Devices like transformers will only operate with alternating current. Hertz measures the number of cycles of positive and negative current per second. In the USA, the standard frequency is 60Hz and in Europe it is 50Hz. Now we come to the concepts of voltage and current. To understand the mains voltage, think in terms of electric pressure. The voltage is there whether you have anything plugged in or not. It rises to a maximum value, falls to zero then rises to a negative value and falls to zero again, all depending on the number of Hertz or cycles per second. For current, think in terms of the amount of electricity passing through the circuit per second. The amount of current that will flow depends on what you plug in. A lamp will draw a lot less current than a heater. Hertz doesn't have a direct relationship to the amount of current. It is a measure of how frequently the current changes.
What measurement can vary with AC current by not DC current?
HZ. Hertz is the name given to the frequency of the alternating circuit. Direct current (DC) has no frequency since one wire is always positive and the other is always negative; but AC (Alternating Current) rapidly changes polarity, and does so at a rate that is defined by HZ.
Which is better for transmission alternating current and direct current?
Alternating current is better than direct current for transmission.
What is DC in electric stand for?
Volts direct current eg battery As opossd to Vac wich is volts altinating current eg mains supply
What type of current is used in your home alternating or direct?
In North America the electrical system is alternating current at a frequency of 60 Hertz. Europe and the UK use alternating current at a frequency of 50 Hertz. Direct current systems are obsolete because of the inability to transmit the voltage over long distances.
What is ac and what is DC?
DC stands for "direct current", AC for "alternating current". A direct current flows in a single direction; an alternating current changes its direction all the time, typicall 100 or 120 times a second (twice the frequency, which is measured in hertz).
How many types of direct current and what is the frequency of direct current?
There is only one type of direct current and its 'frequency' is zero.
Why do you not consider frequency in direct current?
Although DC current can vary in voltage and current over time, it does not reverse polarity, which in AC occurs some distinct number of times per second (hertz) which is the frequency.
Does dc current have hertz?
No.
What are hertz described as?
Hertz is the term meaning cycles per second. Household current in the US is 60 hertz.
Electrically how is AC different from DC current?
DC is direct current, current travels in one direction. AC is alternating current, current changes direction twice per cycle. 60 Hertz would change direction 120 times per second.
Where can one go to find out what special rental offers are available from Hertz?
Hertz can be called directly to talk to an operator who will detail their current specials and can provide advice on specific car discounts based on availability. Otherwise they can be seen directly under the "Discounts and Coupons" tab at the Hertz web site. Brokers also provide discounts across many rental car companies and they can provide better discounts or specific car discounts but the Hertz site covers the direct offers.
What is frequence of dc supply?
Zero = Nothing = Nil = 0 Hertz or Cycles per Second Direct Current is just as its name says: it does not alternate so it does not have any "frequency".
Can hertz kill?
The meaning of Hertz is a unit of frequency in SI; a high frequency electrical current can kill.
WHAT THE RELATIONSHIP BETWEEN THE HERTZ AND CURRENT?
The domestic electricity supply is alternating current. Instead of a steady flow of electrons through your appliances, there is a movement in one direction followed by a movement in the opposite direction. For heating and lighting, alternating current has exactly the same effect as a direct current. Devices like transformers will only operate with alternating current. Hertz measures the number of cycles of positive and negative current per second. In the USA, the standard frequency is 60Hz and in Europe it is 50Hz. Now we come to the concepts of voltage and current. To understand the mains voltage, think in terms of electric pressure. The voltage is there whether you have anything plugged in or not. It rises to a maximum value, falls to zero then rises to a negative value and falls to zero again, all depending on the number of Hertz or cycles per second. For current, think in terms of the amount of electricity passing through the circuit per second. The amount of current that will flow depends on what you plug in. A lamp will draw a lot less current than a heater. Hertz doesn't have a direct relationship to the amount of current. It is a measure of how frequently the current changes.
What does the term frequency mean in electricity?
That refers to AC (alternating current). A direct current flows only in one direction; an alternating current changes its direction all the time. The "frequency" refers to how often the current changes direction. It is expressed in hertz (Hz), which means the same as cycles/second.
