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A positive charge particle with charge q...

A positive charge particle with charge q is moving with speed v in a region of uniform magnetic field B at the instant shown in figure. An external electric field so to be applied so that the charged particle follows a straight line path. The magnitude and direction of electric field required are respectively.

A

qvB, +y axis

B

qvB, -y axis

C

vB, -y axis

D

`(vB)/q,` -x axis

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The correct Answer is:
C
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