Question

The value of charge on the oil droplets observed were -1.6×10^-19 and -4×10^-19 Coulomb then the value of electronic charge , indicated by these results ​

Answer 1

Answer ⇔  (a). n = 1  and  (b). ⇒ charge do not exists.

Explanation ⇒

Given charges,

Q = -1.6 × 10⁻¹⁹ C.

It is asked how many electric charges do it consist off.

Using the formula Q = ne, where n is the no. of electrons and e is teh charge on one electrons.

Thus,

Q = ne

1.6 × 10⁻¹⁹ = n × 1.6 × 10⁻¹⁹

Hence, n = 1.

Thus there is only one electronic charge in that oil droplets.

__________________________

For second oil droplet,

Q = ne

4 × 10⁻¹⁹ = n × 1.6 × 10⁻¹⁹

∴ n = 10/4

∴ n = 2.5 ≈ 3 or 2

There may be 2 or 3 electronic charge since charge do not exist in fraction.

''Note ⇒ I have just applied an mathematics. But think in reality, can this charge be possible. No. This charge do not exist. Only that charge exist for which n is natural no.''

Hope it helps.

Answer 2

Answer is - 0.8 × 10^-19

Hope this will help you

Thanks

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