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

(a) $eVB\stackrel{^}{k}$ , ABCD                                (b) $eVB\stackrel{^}{k}$ , EFGH

(c) $-eVB\stackrel{^}{k}$ , ABCD                              (d) $-eVB\stackrel{^}{k}$ , EFGH

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