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

40. A positive charge particle with charge q is moving with speed vi

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