Magnetic field due to currentHard
Question
particle of mass m and charge q moves with a constant velocity v along the positive x-direction. It centre region containing a uniform magnetic field B directed along the negative z-direction, extending from x = a to x = b. The minimum value of v required so that the particle can just enter the region x > b is
Options
A.
B.
C.
D.
Solution
If (b - a) ≥ r
(r = radius of circular path pf
The particle cannot eneter the region x > b
So, to enter in the region x > b
r > (b - a)
or
> (b - a)
or v >
(r = radius of circular path pf
The particle cannot eneter the region x > b
So, to enter in the region x > b
r > (b - a)
or
> (b - a)or v >
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