Recent content by Millsworth

  1. M

    Undergrad Why Does Adding an Opposite Point Charge Affect Electric Field Strength?

    If only the positive charge was present E = 1.4x10^11 N/C If opposite charge is added, OCR say E = 7.2X10^10 N/C
  2. M

    Undergrad Why Does Adding an Opposite Point Charge Affect Electric Field Strength?

    Thank you for your swift response Are you saying that you think the exam solution is wrong? Is my students answer correct? Should the solution to ii be 2(kQ/(r/2)^2?
  3. M

    Undergrad Why Does Adding an Opposite Point Charge Affect Electric Field Strength?

    I am having difficulty explaining this question to my student. His solution to part ii was (taking r to be the distance between the point charges) E = 2(kQ/(r/2)^2 due to the fact that you are measuring the field strength half way between the point charges. So, E = 2 x (9E9 x...