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Q.

Is it true that $6.25 \times 1 0^{18}$ electrons constitute one coulomb of charge?

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a

True

b

False

answer is A.

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Detailed Solution

The above statement is True.
From the quantization of charge, we have:

Q = \pm ne

…………………….. (i)
Where ‘n’ is the number of electrons constituting the charge ‘Q’, the charge of an electron is

e^{-} = 1.6 \times 1 0^{- 19} C

.
Therefore, the number of electrons constituting one coulomb of charge can be determined as follows:

= > n = \frac{Q}{e}

= > n = \frac{1}{1.6 \times 1 0^{- 19}}

= > n = 6.25 \times 1 0^{18}

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Is it true that 6.25 ×1018 electrons constitute one coulomb of charge?