A charged particle moves into a region containing both an ...

[stevenposner]

A charged particle moves into a region containing both an electric field and a magnetic field. Which of the statements below is/are true?
   A. The particle cannot accelerate in the direction of B.
   B. The path of the particle must be a circle.
   C. Any change in the particle's kinetic energy is caused by the E field.

  1.Only A
  2.Only B
  3.Only C
  4.Both A and B
  5.Both A and C
  6.Both B and C
  7.All are true.
  8.None are true.

Question 2

Two identical bar magnets are placed rigidly and anti-parallel to each other as shown. At what locations, if any, is the net magnetic field close to zero?
 
  1.A only
  2.B only
  3.C only
  4.D only
  5.A and B
  6.A, B, and C
  7.C and D
  8.None of the above.

[nhea]

Answer to Question 1

3

Answer to Question 2

3