1.Let A⃗\vec{A}A be a constant vector of magnitude AAA and E⃗\vec{E}E be a vector perpendicular to A⃗\vec{A}A such that dE⃗dt=A⃗×E⃗\dfrac{d\vec{E}}{dt}=\vec{A}\times\vec{E}dtdE=A×E. Which statement about the motion of E⃗\vec{E}E is correct?a.E⃗\vec{E}E revolves in a plane perpendicular to A⃗\vec{A}A with angular speed AAAb.E⃗\vec{E}E remains fixed in directionc.E⃗\vec{E}E revolves in a plane parallel to A⃗\vec{A}Ad.The magnitude of E⃗\vec{E}E changes with timeLogin to continueOnly logged in users canattempt or see the solution.