Question

What is charge on $90kg$ of electrons?

• A. $1.58\times 10^{13}$
• B. $2.3\times 10^{12}$
• C. $2.53\times 10^{12}$
• D. None of these

Answer 1

Answer: (A)

Since elm is the charge per $kg$ of electrons,
therefore, charge on $90kg$ of electrons
$=\frac{e}{m}\times 90$
$=1.76\times 10^{11}\times 90$
$1.58\times 10^{13}C$