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Physics: Core Concepts MCQs

Waraq ECAT Review: Physics · ECAT / Engineering Entrance · 20 practice questions

1. The Lorentz force on a charge q moving with velocity v in a magnetic field B is:

  1. Aq v x B
  2. Bq/v B
  3. Cq v B only
  4. Dq E
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A. q v x B It is perpendicular to both v and B.

2. The angle between the force and the displacement for maximum work is:

  1. A90 degrees
  2. B180 degrees
  3. C45 degrees
  4. D0 degrees
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D. 0 degrees W = F d cos theta.

3. The area under a velocity-time graph gives:

  1. ASpeed
  2. BForce
  3. CAcceleration
  4. DDisplacement
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D. Displacement The slope gives acceleration.

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