question_answer

    An electron (\[70\Omega \]) kg and charge \[{{\left[ {{(R\omega )}^{2}}+{{\left( L\omega -\frac{1}{C\omega } \right)}^{2}} \right]}^{1/2}}\]) is moving in a circular orbit in a ^magnetic field of\[{{\left[ {{R}^{2}}+{{\left( L\omega -\frac{1}{C\omega } \right)}^{2}} \right]}^{\frac{-1}{2}}}\]. Its period of revolution is :

A) \[{{[{{R}^{2}}+{{(L\omega -C\omega )}^{2}}]}^{1/2}}\]                  

B)  \[{{\left[ {{R}^{2}}+{{\left( L\omega -\frac{1}{C\omega } \right)}^{2}} \right]}^{-1/2}}\]

C)  \[R\Omega \]                  

D)  \[\text{25}\times \text{1}{{0}^{-\text{3}}}\text{ mH}\]