Physics, asked by sureshnagia177, 10 months ago

how many electrons are present in 4c of charge ?​

Answers

Answered by shreymaslekar
2

Answer

Explanation: change of electron is actually negative but as question is asking about positive value I had used the positive value of charge of electron.

Attachments:
Answered by ArunSivaPrakash
1

Given: the charge, Q = 4 C

To Find: Number of electrons, n

Solution:

To calculate n, the formula used:

  • Q = n x e

       here, Q is the charge

       n is the number of electrons

       e is the charge on an electron i.e. = -1.6 x 10⁻¹⁹ coulombs

Applying the above formula:

Q = n x e

4  = n x 1.6 x 10⁻¹⁹

n x 1.6 x 10⁻¹⁹ = 4

n = 4 / 1.6 x 10⁻¹⁹

  = 4 x 10¹⁹ / 1.6

  = 4 x 10 x 10¹⁹ / 16

  = 10 x 10¹⁹ / 4

  = 2.5 x 10¹⁹

  = 25 x 10¹⁸

n = 25 x 10¹⁸

Hence, the number of electrons present in 4C of charge is 25 x 10¹⁸ electrons.

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