A particle of charge –16 × 10–18 coulomb moving with velocity 10ms–1 along the x-axis enters a region where a magnetic field of induction B is along the y axis, and an electric field of magnitude 104V/m is along the negative z axis. If the charged particle continues moving along the x-axis, the magnitude of B is
(a) 103Wb/m2
(b) 105Wb/m2
(c) 1016Wb/m2
(d) 10–3Wb/m2 .
