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What is the difference between static charge and current?

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kaspercool | Student, Grade 11 | eNotes Newbie

Posted February 3, 2010 at 8:40 PM via web

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What is the difference between static charge and current?

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fawadphysics | (Level 1) eNoter

Posted February 3, 2010 at 10:44 PM (Answer #1)

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The charges that are at rest are known as static charges and the charges that are in motion gives rise to an effect known as electric current.For example when you comb your hair or when you rub a ball point with your hair you will observe that these bodies will attract some other bodies.These effects are due to the excess or deficiencies of charges in bodies and you are observing the properties of charges which are at rest,i.E attraction or repulsion only. But if you observe a live wire in which we say current will flow if connected to neutral wire then at that time the charges are flowing through the wire due to the presence of potential difference or in simple words due to the application of energy stored in power station.

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krishna-agrawala | College Teacher | (Level 3) Valedictorian

Posted February 7, 2010 at 6:48 PM (Answer #2)

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The proper technical terms are static electricity and electric current, rather than static charge and current.

Static electricity refers to the situation when the the quantity of the total positive and negative charge in an object is not equal. This results in the entire object becoming positive or negatively charged depending on whether positive or negative charge is in excess. In this condition the object is said to be electrically charged. Static electricity implies that there is no movement of any positive or negative charge within the object or across the object.

In contrast electric current refer to movement of either positive or negative charge within or across objects. Electric current is often defined as flow of electric charge through a conductor.

Thus static electricity may be compared to a vessel containing water without any water flowing in or out of the vessel. In contrast electric current may be compared to water flowing through pipes connected to the vessel.

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versatilekamini | College Teacher | (Level 1) Valedictorian

Posted February 4, 2010 at 11:36 PM (Answer #3)

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Electrical phenomena can be classified in one of two general categories: static electricity or current electricity. The term static electricity refers to the behavior of electrical charges at rest. Suppose you hang two ping-pong balls from silk threads so that they are about 2 inches apart. Then imagine that each ball is rubbed with a piece of wool. The two balls become electrically charged with the same sign. Because like charges repel each other, the two balls will swing away from each other because of the static charge on each one.

Current is the rate of flow of electrons. It is produced by moving electrons and it is measured in amperes. Unlike static electricity, current electricity must flow through a conductor, usually copper wire. Current with electricity is just like current when you think of a river. The river flows from one spot to another, and the speed it moves is the speed of the current. With electricity, current is a measure of the amount of energy transferred over a period of time. That energy is called a flow of electrons. One of the results of current is the heating of the conductor. When an electric stove heats up, it's because of the flow of current.

 

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