An electron travelling with a spped `u` along the positive `x-axis` enters into a region of magnetic field where `B= - B_(0)hat (K) (xgt0)`. It comes out of the region with speed `v` then
A
` v = u at ygt 0`
B
` v = u at y lt 0`
C
` v gt u at ygt 0`
D
` v gt u at y lt 0`
Text Solution
Verified by Experts
The correct Answer is:
B
The force acting on electron will be perpendicular to the direction of velocity till the remains in the magnetic field. So the electron will follow the path as given .
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