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JEE · NEET Previous Year Question

$If a charge on the body is 1 nC, then how many electrons are present on the body?$

Topic: JEE PYQ

Answer: D. Full step-by-step solution below.

A $6.25 \times 10^{27}$
B $1.6 \times 10^{19}$
C $6.25 \times 10^{28}$
D $6.25 \times 10^{9}$

Correct answer: D

Solution

(d) Charge on the body is q = ne ∴ No. of electrons present on the body is n = \frac{q}{e} = \frac{1 \times 10 ^{- 9} C}{1.6 \times 10 ^{- 19} C} = 6.25 \times 10^{9}

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