A D-cell is about 6 cm long and 3.5 cm in diameter. Assume that the field points directly from the positive endplate to the negative endplate, even though this is not strictly true the way the D-cell is normally constructed.

What is the approximate magnitude of the electric field inside a 1.5-V D-cell between its terminals -

  1. 4.0 N/C
  2. 0.25 N/C
  3. 25 N/C
  4. 0.040 N/C
  5. 9.0 N/C