Question

In the case of the Bohr atom model, if $E_k$ and $U$ are the kinetic and potential energies of an electron in an orbit then,

• A. $E_k+U =0$
• B. $E_k-U =0$
• C. $2E_k+U =0$
• D. $E_k+2U =0$

Answer 1

Answer: (C)

$2E_k+U =0$

Answer 2

In an orbit of the Bohr atomic model, $Ek+ U$ = total energy $(E)$
$\because$ kinetic energy, $(E_k )$ = - total energy $(E)$
$\therefore \, E_k + U = - E_k$
or $2E_k + U = 0$.