Question

An oil drop has 6.39x10-19 charge. What will
be the number of electrons in this drop?​

Answer 1

Answer:

The correct answer is ~4 electrons.

Explanation:

Firstly I think ur question is not complete.

U must give the unit of charge.

I am solving it for the question

An Oil drop has 6.39×10^-19 C.

There are few concepts needed for this question which are :-

C1: Charge of an electron is 1.6×10^-19 C.

C2: No. of electron = (Charge of the given substance) / (Charge of an electron)

So from C1 and C2, we get,

no. of electron = (6.39×10^-19) / (1.6 × 10^-19)

It implies

===> n=3.99375. ~ 4 electrons.

Answer 2

Answer:

Explanation:

Please refer the below attachment.