A charge of -4 x 106 coil is moving at 800 m/s along a path parallel to a horizontal straight wire and is 20 cm above it. If the wire carries a current of 12 amps, and is directed towards the East, calculate
(a) the maginetic field produced by the wire acting on the charge; and the
(b) magnitude and direction of the force on the charge? ( µ0= 4Ï€ x 10-7 T.m.A)