An electron having mass `9xx 10^(-31)` kg, charge `1.6xx 10^(-19) C` and moving with a velocity of 106 m/s enters a region where mag. field exists. If it describes a circle of radius 0.10 m, the intensity of magnetic field must be ................ Tesla
Options:
(a) `1.8xx 10^(-4)`
(b) `5.6xx 10^(-5)`
(c) `14.4xx 10^(-5)`
(d) `1.3xx 10^(-6)`