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A particle having mass m and change q is released from the origin in a region in which electric field and magnetic fields are given by B → = - B 0 j ^ and E → = E 0 k ^ . The speed of the particle as a function of its z -coordinate is

Options

  1. A2 q V B 0 + q E 0 Z m
  2. B- q V B 0 + q E 0 2 Z m
  3. Cq E 0 Z 2 m
  4. D2 q E 0 Z m

Correct answer

D. 2 q E 0 Z m

Step-by-step solution

m V 2 2 = q E 0 Z [As magnetic force does zero work] v = 2 q E 0 Z m

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