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The charge `+q` moving with a velocity `vecV=V_(0)hati` enters a region of uniform electric and magnetic fields with `vecE=4xx10^(3)hatjN//C` and `vecB=0.1kT`. As it moves in the two fields, it deflects along negative y-axis then value of `V_())` must be greater than `x xx10^(4)m//s`. The value of x is:

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The correct Answer is:
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`qV_(0)BgtqE,V_(0)gtE/B=(4xx10^(3))/0.1=4xx10^(4)m//s`
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