question_answer

If an electron revolves in the path of a circle of radius of \[0.5\text{ }\times \text{ }{{10}^{10}}m\]at frequency of \[5\text{ }\times \text{ }{{10}^{15}}cycles/s\]the electric current in the circle is (Charge of an electron \[=\text{ }1.6\text{ }\times \text{ }{{10}^{19}}C\]) [EAMCET 2000]

A)            0.4 mA

B)                                      0.8 mA

C)            1.2 mA                                    

D)            1.6 mA