A particle of mass m and charge q moves with constant velocity v along positive x−direction. It enters a 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:

A particle of mass m and charge q moves with constant velocity v along

1.	A particle of mass m and charge q moves with constant velocity v along positive x−direction. It enters a 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:
Answer» A particle of mass $m$ and charge $q$ moves with constant velocity $v$ along positive $x -$ direction. It enters a 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:

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