An electron travelling with a speed u along the positive x -axis enters into a region of…
Physics · JEE Advanced · NTA Exams — Magnetic Effects of Current and Magnetism
An electron travelling with a speed u along the positive x-axis enters into a region of magnetic field where
\(B=-B_{0} \hat{k}(x>0) .\)
It comes out of the region with speed v then
\(B=-B_{0} \hat{k}(x>0) .\)
It comes out of the region with speed v then
- v = u at y > 0
- v = u at y < 0
- v > u at y > 0
- v > u at y < 0 .
Answer
(A) v = u at y > 0
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