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



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