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Question

# Can a body have a charge of 4.8×10−20 coulomb?

A
Yes
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B
No
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C
May be
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D
Only semiconductors can have
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Solution

## The correct option is B NoStep 1: Quantization of chargeCharge on a body is quantized which means the charge on the body will be an integral multiple of e.i.e.Q=±ne ....(1)where n is an integer.Step 2: Check whether n is an integer or notEquation (1)⇒4.8×10−20C=n×1.6×10−19C ⇒n=4.8×10−201.6×10−19=0.30.3 is not an integer. Therefore, a body can't have a charge of 4.8×10−20C.Hence, Option(B) is correct.

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