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The change from negative to positive and from positive to negative in an alternating current?
Wiki User
∙ 13y ago
Is called AC voltage or current.
Wiki User
∙ 13y ago
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What is the basic difference between dc current and ac current?
AC (Alternating Current) - It fluctuates from +ve to -ve (Ie- positive voltage to negative voltage), it does this constantly, hence why it alternates. DC (Direct Current) - It has a constant supply of electricity but the voltage does not change at all. It goes in one direction ONLY. Main difference: AC changes the voltages from positive to negative CONSTANTLY (current goes up & down), and DC has a continuous supply of current which flows IN ONE WAY.
What is equivalent positive flow in a circuit?
Positive electrical flow is electrons flowing in one direction in a wire, if they change the direction of flow that would be a negative flow. If they change direction quickly, say 60 times a second, that would be alternating current, which is what we have in the united states as household electricity.
Will this entropy change by positive or negative?
negative
An alternating current has a frequency of 50 Hz how many times does it change its direction in one second?
Hertz is just another name for cycles per second. In an alternating current situation a sign wave is positive for half the cycle and negative for the other half. So in a simple example of 2 HZ if the voltage starts at zero and goes positive for a half cycle (1/4 sec), it then goes negative for a half cycle (Change in polarity #1), then positive at 1/2 second (Change in polarity #2). Then positive until 3/4 seconds where it again crosses zero (3rd change) and finally at 1 sec to return to zero (4th change). Hence 50 HZ changes polarity 100 times per second.
What is the direction of the current?
Current flows from negative to positive for DC. AC the direction changes with the sinewave. eg. AC a frequency of 60Hz the direction changes 120 times.
What is ac and DC current?
AC stands for alternating current and means that the current changes directions, flipping repeatedly from positive to negative and back again.DC means direct current, the current only flows in one direction and does not change polarity.
What is the basic difference between dc current and ac current?
AC (Alternating Current) - It fluctuates from +ve to -ve (Ie- positive voltage to negative voltage), it does this constantly, hence why it alternates. DC (Direct Current) - It has a constant supply of electricity but the voltage does not change at all. It goes in one direction ONLY. Main difference: AC changes the voltages from positive to negative CONSTANTLY (current goes up & down), and DC has a continuous supply of current which flows IN ONE WAY.
What is equivalent positive flow in a circuit?
Positive electrical flow is electrons flowing in one direction in a wire, if they change the direction of flow that would be a negative flow. If they change direction quickly, say 60 times a second, that would be alternating current, which is what we have in the united states as household electricity.
What is a negative multiplied by a negative?
negative*negative=positive negative/positive=negative negative\negative=positve negative-positive=change the sign to a plus and then change the number after the sign and get your answer negative +positive=which ever numbr is bigger minus positive+positive=positive
What has the ability to change alternating current into direct current?
rectifier
What are currents that change direction?
Alternating Current
Do you change anything to a problem if it is a negative and a positive?
It truly depends on what the problem is, but normally a negative will change the overall answer of the sum: + and - = negative answer - and - = positive answer + and + = positive answer - and + = negative answer
What is the positive on a electrical outlet?
In the United States, if the outlet is polarized (one slot is larger than the other), the smaller slot is the positive, or hot, assuming it is wired correctly.Another PerspectiveThe above answer is correct in that there is a "hot" and a "neutral", but technically, if you are asking about true polarity, there is no positive and no negative in a housing or commercial outlet. Utility power service is referred to as "alternating current", meaning that the true polarity of an outlet reverses 60 times per second, with one side temporarily being positive and the other negative.If you are trying to use "direct current", you will need to use some kind of diode or rectifier to change the alternating current to direct current.
Is this a positive or a negative change why?
Industrial Revolution had both negative and positive change in the Americans.
What is negative 4 minus positive 21?
the answer of negative 4 minus positive 21 is positive 25 because you leave the negative 4 as is, change the minus to a plus, and change positive 21 to negative 21. (Leave Change Change)
What is the differences between direct circuit and alternating circuit?
The main difference between direct current (DC) and alternating current (AC) is the direction of the electrical flow. In a direct current circuit, the flow of electrons is in one direction, from the negative terminal to the positive terminal. In an alternating current circuit, the flow of electrons changes direction periodically, typically at a fixed frequency, resulting in an oscillating current flow. AC is widely used for electrical power distribution, while DC is commonly used in batteries, electronic devices, and certain applications like electric vehicles.
What is a device used to change voltage of an alternating current?
A transformer.
