A particle having a charge of 10 uC and mass 1 ug moves in a horizontal circle ofradius 10 cm under the influence of a magnetic field of 0.1 T. When the particle is at a point P, a uniform electric field is switched on so that the particle starts moving along the tangent with uniform velocity. The electric field is:

(a) 0.1 V/m
(b) 1.0 V/m
(c) 10.0 V/m
(d) 100 V/m