Reading the Lorentz force

Exercise and reference answers

Questions

1. Question

   The Lorentz force acts on a charge that is

   Choices

   1. At rest only
   2. Neutral
   3. Moving

   Correct choice

   Moving

2. Question

   The magnetic part depends on

   Choices

   1. v cross B
   2. v dot B
   3. B alone

   Correct choice

   v cross B

3. Question

   Work done by the magnetic part is

   Choices

   1. Always positive
   2. Zero
   3. Always negative

   Correct choice

   Zero

4. Question

   The electric part of the force is

   Choices

   1. qB
   2. qv
   3. qE

   Correct choice

   qE

Instructions

Tap the chip that answers each prompt.

Explanation