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Although in AC, the voltage does change, it is the reversing of direction of flow of the current which was used to designate the AC name.

AnswerIn engineering terminology, the abbreviation a.c. is considered to be an adjective. So, it is quite normal to talk about an 'a.c. voltage', in just the same way as we describe an 'a.c. system', or an 'a.c. motor', etc. However, it is also correct to use the term 'alterating voltage', where applicable.
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Q: Why it is called alternating current and not alternating voltage?
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How does a welding transformer work?

A welding transformer uses the alternating current supplied to the welding shop at a high voltage to produce the low voltage welding power


Why is alternating current used for domestic purposes?

Alternating current is easier to distribute than direct current, because alternating current can be raised or lowered in voltage by a transformer. This allows very high voltages to be used in long distance transfer of electricity, which is then stepped down several times before being supplied to the end user. As the voltage is increased in a circuit, the current, as measured in amperes, decreases for a given load. This allows the use of lighter wire to transmit large amounts of electricity.


Whether alternating current or direct current is safer?

Well, voltage and current levels being identical, alternating current would be safer. It does not spend 100 percent of its time at peak voltage, therefore the average power in case of an electric shock is lower than that of direct current, which is 100 percent. This lesser average may allow some time to detach from the circuit and may not cause such catastrophe to the body.


What is variable alternating current?

A current which changes its direction of flow again and again is known as alternating current.


Is DC voltage and average voltage same?

no, dc volatage is a type of current direct current, ac is alternating current, average voltage could be any type of voltage ac or dc that maintains a constant rangeAnswerNo. A DC voltage is exactly equivalent to an AC rms-voltage. So, for example, 100 V (DC) is exactly equivalent to 100 V (AC rms). The average value of an AC waveform is zero.

Related questions

A device that increase the voltage of an alternating current is called a?

That's called a transformer.


A device that increases the voltage of an alternating current is called?

That's called a transformer.


A transformer can only the voltage of an alternating current?

A transformer can only increase or decrease the voltage of an alternating current, and it is called step-up transformer or step-down transformer accordingly.


The change from negative to positive and from positive to negative in an alternating current?

Is called AC voltage or current.


What is alternating current normally produced by?

Alternating current is normally produced by rotating the magnet in the coil of an induced alternating voltage. When connected to a circuit, an alternating current will flow.


What is the voltage of alternating current?

60 Hz


What is term used when an Alternating current acts like a direct current?

Perhaps you are asking how the voltage of alternating current is measured, to be equivalent to the voltage of a direct current system. Alternating current and direct current have distinct properties. With direct current, voltage is at a constant polarity, and a direct current voltage source will maintain a uniform, constant voltage level. Alternating current reverses polarity at a given frequency and therefore it's voltage continuously varies from a positive peak voltage level, through zero, to a negative peak voltage level, repeating this cycle continuously. For this reason, voltage of an alternating current system, is measured in root-mean-square (rms), which is a voltage, which when multiplied by the current in amperes, calculates power which is equivalent to that of direct current of the same voltage and current values. With a typical sinusoidal waveform, the peak voltage of alternating current is divided by the square root of 2 to determine the rms voltage. The 120 volts output in the wall outlet in our home is actually about 170 peak volts.


Moving a magnet in and out of a coil of wire produces?

That will induce a voltage across the wire.


Why it is called alternating current not alternating voltage?

There's absolutely nothing wrong with using the term 'alternating voltage', if you are describing voltage rather than current. However, In engineering terminology, the abbreviation a.c. is considered to be an adjective. So, it is also quite normal to talk about an 'a.c. voltage', in just the same way as we describe an 'a.c. system', or an 'a.c. motor', etc.


Ac voltage applied across a load resistance produce alternating current?

The reason an AC voltage applied across a load resistance produces alternating current is because when you have AC voltage you have to have AC current. If DC voltage is applied, DC current is produced.


What are the uses of alternating current?

voltage can carry current a further distance.


What are the kinds of voltage?

Alternating current - AC, and direct current - DC.