Question

If a droplet has three extra electrons, what is it’s measured charge?

Answer 1

Answer:

negative

Explanation:

Each droplet should have an integer multiple of the elementary charge. The smallest charge measured is the charge of an electron.

Answer 2

The charge of a droplet having 3 extra electrons is –3

Let the number of proton and electron of the droplet at ground state be 1

• From the question given above, we were told that the droplet now have 3 extra electrons i.e

Proton = 1

Electron = 1 + 3 = 4

Charge =?

The charge on the droplet can be obtained as follow:

Charge = Proton – electron

Charge = 1 – 4

Charge = –3

Therefore, the droplet has a charge of –3

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