In a velocity selector, E = 20,000 V/m and B = 0.1 T are at right angles. The speed of particles that pass through undeflected is:

  1. 2000 m/s
  2. 2 10^5 m/s
  3. 4 10^5 m/s
  4. 1 10^5 m/s
Answer

B) 2 10^5 m/s

qE = Bqv Rightarrow v = EB = 2 10^5 m/s. SLO P-09-E-34 · Understanding

Physics MCQ · More Magnetism and Electromagnetic Induction MCQs · Practise