Question Detail
Question
According to the document, if a negative charge (q) is moved from point A to point B in the field of a positive charge (Q), and mutual attraction exists, what is the sign of the work done by 'us' (the environment) on the charge?
Correct Answer
Option A is the correct answer.
Detailed Explanation
The document explains, 'Let q as in Section be negative. Taking it from A to B in the field of the positive charge will be positive work done by us on the charge, as we have to force it to move away from the unlike charge.' (page 16, 'Electric Potential Energy' section).
Hint
When you have to 'force' a charge to move against an attractive force, are you doing positive or negative work?