– is a form of energy generated by friction, induction or chemical change, having magnetic chemical and radiant effects

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Electrons in motions.

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a combination of two or more elements

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smallest particle that a compound can be reduced to before it breaks down into its elements.

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– a substance that cannot be decomposed any further by chemical action.

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smallest part that an a element can be reduced to and still keeping the properties of elements.

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What do you call on a Negative Charge?

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What do you call on a Positive Charge?

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center of the atom, it is where the protons and neutrons are located.

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No charge

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represents the number of electrons or protons of an atom.

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– it is where the electron revolves around.

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electrons found in the outermost shell or orbit of an atom.

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– Represents the sum of protons and neutrons of an atom

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What are the Types of Electrical Material?

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are materials in which electric charges move freely

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V.E. is less than 4

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are materials in which electric charges move poorly or not at all

(a)  

are materials in which electric charges move poorly or not at all

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V.E. is greater than 4

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material has an electrical conductivity value falling between that of a conductor and an insulator

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control the charge flow in electronic circuits. By definition, active elements generate energy for any device. It is the core component to operate any device. T

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are quite opposite to active ones. They don’t require any external voltage to perform their job.

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A body is said to be charge, if it has either an excess or deficit of electrons from its normal value due to sharing

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unit of electric charge which is equivalent to $$6.25x10^{18}$$ electrons or protons.

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Who discovered Coulomb ?

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the capability of doing work

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– any charge has the capability of doing work of moving another charge either repulsion or attraction.

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unit of potential difference which is equal to one joule of work done per one coulomb of charge.

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Who discovered Volt?

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when a potential difference between two charges forces a third charge to move the charge in motion.

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unit of charge flow equal to one column of charge past a given point in one second.

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Who discovered Ampere?

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What are the two Classification of Current?

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current flowing in one direction starting from negative terminal to positive terminal

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constantly flowing in reverses direction, produce in a generator and uses in all application in supplying electricity.

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– The property of the material that opposes the flow of an electric current.

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the term used for the total opposition of current in AC System

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unit of resistance.

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Who discovered Ohm?

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is a measure of the material’s ability to conduct current. It is equal to the reciprocal of resistance.

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unit of conductance

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is an instrument used for measuring Electromotive force of potential difference

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is an instrument used for measuring current in an electric circuit

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is an electrical instrument that measures electrical resistance

(a)  

is an instrument for measuring the electric power

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this is a versatile device, which may be used as a volt meter, an Ammeter or an ohmmeter.

(a)  

use a microammeter with a moving pointer to display readings.

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have a numeric display, and may also show a graphical bar representing the measured value.

(a)  

use a microammeter with a moving pointer to display readings.

(a)  

V.E. is greater than 4

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