Question

Formula for calculating the mass of the electron $\left(m_e\right)$ is

• A. $m_e=e\cdot \left(e/m_e\right)$
• B. $m_e=\frac{e}{\left(e/m_e\right)}$
• C. $m_e=e+\left(\frac{e}{m_e}\right)$
• D. $m_e=e-\left(\frac{e}{m_e}\right)$

Answer 1

Answer: (B)

Formula for calculating mass of electron $\left(m_e\right)$ is
$m_e=\frac{e}{\left(e/m_e\right)}$.
where, $m_e=$ mass of electron in $kg$.
$e=$ magnitude of the charge on the electron in Coulomb $(C)$.
Since, electrons are negatively charged, the charge on electron is $-e$.