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If wall current is said to be alternating why does it have a positive and a negative?
Wiki User
∙ 14y ago
There is no positive and negative. There is hot and ground. The hot (120 volts AC) is in reference the ground (Earth).
Wiki User
∙ 14y ago
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Why can't AC electricity be used to make an electromagnet?
In an electromagnet, the negative side of the coil is said to "emit" the magnetic field lines- it is the north pole of the electromagnet. However, in alternating current, the energized wire alternates between positive and negative. As a result, a conventional electromagnet running on alternating current would constantly be undergoing a reversal of the poles.
What is difference between positive and negative conductor?
There is no positive and negative conductor. There are just two ends of a conductor, namely positive and negative. It is usually said that electricity flows from the positive to the negative side of a conductor, but scientists have discovered, that current consists of electrons that always flows from the negative to the positive side.
Which terminal does the current flow in a circuit?
Strangely there is two directions it is said to flow. The first and wrong is conventional current that is positive to negative. WRONG. Several hundred years ago people guest Electron current is the direction it actually goes in. This is negative to positive.
In a battery current flows from which terminal to which terminal?
Strangely there is two directions it is said to flow.The first and wrong is conventional current that is positive to negative. WRONG. Several hundred years ago people guestElectron current is the direction it actually goes in. This is negative to positive.
Why is it incorret to say ac current?
The correct term is Alternating Current which AC stands for. So once you say AC you are saying Alternating Current. To say AC Current is to say Alternating Current Current.
Why current flow in the opposite direction of flowing electron?
Electrons do not flow, but they might be though of as 'flowing' as they transfer charges between them. The reason that electron flow is the opposite direction from current is that historical theories of electrical flow (current) treated it as a movement of positive charges rather than negative charges.There is no actual difference that could be discerned, except that we now know that negative charges (electrons) constitute the basis of most common electricity.
What are macbeths positive and negative qualities?
i can only answer what is negative it is said that the play is unlucky and is cursed!!
What is the magnetic charge of the South Pole?
Negative is the current magnetic charge of the Earth's South Pole.But such has not always been the situation. Scientists suggest that the charge changed from positive to the current negative about a million years ago. At the same time, the North Pole's magnetic charge changed from negative to its current positive.AnswerWe do not describe a magnetic pole as a 'charge', and the terms 'positive' and 'negative' are not applied to magnets. Magnetic poles are described as being 'north' and 'south', whereas electric charges are described as being 'positive' or 'negative'.Having said this, it should be mentioned that people involved with magneto therapy do describe magnetic poles as being 'positive' and 'negative', but this is a pseudoscience and much of its terminology is nonsense.
Compounds that have the same number of positive and negative charges are said to be?
Compound having any positive or negative particle are said to be charged particle . it is not so that there should be same number of positive or negative infact these are called saturated particle .an atom carring positive particle are called cationwhile negative particle are called anionby MK
What objects with equal amounts of positive and negative charge are said to be electrically?
An object with equal amounts of positive and negative charge is electrically neutral.
What is more serious getting a false negative or a false positive?
Positive = You really did it. False Positive = The test said you did it, but you really did not.
What current has a negative sign and what does it indicate?
Electrical current in copper is the flow of electrons which are negaitve charge particles. In a typical battery, electrons flow from the negative (bottom) side to the positive (top, nipple) side. However, the engineering convention is to call the "plus" side of the battery the source so current is said to flow from the plus side to the negative side -- which is the opposite to the physical flow of electrons.
