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How many extra electrons are present …

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How many extra electrons are present on a body having 2 coulombs of negative charge?

Posted by Tanishq Kabir 6 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Naveen Sharma 6 years, 11 months ago

Ans. We know the charge on an Electron is {tex}1.6 \times 10^{-19} C{/tex}

So e = {tex}1.6 \times 10^{-19} C{/tex}

Total Charge Required q = 2 C

Since , q = ne

where n is no of electrons.

So, n = {tex}q\over e{/tex} = {tex}2\over 1.6 \times 10^{-19} {/tex}

= {tex}{2 \times 10^{19} \over 1.6 }{/tex} = {tex}1.25 \times 10^{19}{/tex}

0Thank You

ANSWER

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CBSE > Class 10 > Science