$(a)\;1.33\times10^{13}\;C\qquad(b)\;-1.33\times10^{13}\;C\qquad(c)\;-1.2\times10^{-17}\;C\qquad(d)\;3.93\times10^{13}\;C$

Want to ask us a question? Click here

Browse Questions

Ad |

0 votes

0 votes

- The SI unit of quantity of electric charge is the coulomb, which is equivalent to about $6.242 \times 10^{18}$ e (e is the charge of a proton). Hence, the charge of an electron is approximately $?1.602 \times 10^{?19}$ C.

Answer : $\;-1.33\times10^{13}\;C$

Explanation : Number of electrons in 75 kg = $\;\large\frac{75}{9.11\times10^{-31}}$

$=8.23\times10^{31}$

Mass of one $\;e^{-}=9.11\times10^{-3}\; kg$

Charge on these electrons = $\;-8.23\times10^{31}\times1.6\times10^{-19}$

$=-1.31\times10^{13}\;C$

Ask Question

Take Test

x

JEE MAIN, CBSE, AIPMT Mobile and Tablet App

The ultimate mobile app to help you crack your examinations

...