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Question

What is the S.I. unit of charge?

A
Ampere
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B
Charge
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C
Coulomb
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D
Volt
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Solution

The correct option is D Coulomb
The SI unit of electric charge is Coulomb, One coulomb is equal to about 6.242×1018e. According to above definition, charge of an electron is approximately equal to e=1.6×1019C.
One coulomb is defined as the quantity of charge which will pass through the cross section of an electrical conductor while one ampere current is flowing through the conductor in one second. Electric charge is denoted by Q.

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