A metallic block carrying current I is subjected to a uniform magnetic induction B as shown in the figure. The moving charges experience a force given F by ........... which results in the lowering of the potential of the face ........ Assume the speed of the carriers to be v

                   

(a) eVBk^ , ABCD                                (b) eVBk^ , EFGH

(c) -eVBk^ , ABCD                              (d) -eVBk^ , EFGH

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