Let's say the charge of an electron is -1e. Then if I charge up my cat, which of these can be a possible value of charge it aquires?

3/2 e

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5 e

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4.65e

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None of these.

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Solution

The correct option is B
5 e

Charges are quantized. All values of charge must be a integral multiples of the charge of 1 electron. Hence the only possible answer is 5e.

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