SATHEE: Electrostatics Question 209

Electrostatics Question 209

Question: A body has ? 80 micro coulomb of charge. Number of additional electrons in it will be [MP PMT 2003]

Options:

A) $8 \times 10^{- 5}$

B) $80 \times 10^{- 17}$

C) $5 \times 10^{14}$

D) $1.28 \times 10^{- 17}$

Show Answer

Answer:

Correct Answer: C

Solution:

By $Q = N e$ or $N = \frac{Q}{e} ∴ N = \frac{80 \times 10^{- 6}}{1.6 \times 10^{- 19}} = 5 \times 10^{14}$

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