question_answer

An electron is accelerated by a potential difference of 12000 volts. It then enters a uniform magnetic field of \[{{10}^{-3}}\,T\] applied perpendicular to the path of electron. Find the radius of path. Given mass of electron \[=9\times {{10}^{-31}}\,kg\] and charge on electron \[=1.6\times {{10}^{-19}}\,C\]                               [MP PET 1997]

A)            36.7 m                                     

B)            36.7 cm

C)            3.67 m                                     

D)            3.67 cm