Use the following figure to answer the next problem: Two equal positive charges are placed x m apart.The equipotential lines are at 100 V interval.
-The potential at a point due to a unit positive charge is found to be V.If the distance between the charge and the point is tripled,the potential becomes

Question

Use the following figure to answer the next problem:

Two equal positive charges are placed x m apart.The equipotential lines are at 100 V interval.
-The potential at a point due to a unit positive charge is found to be V.If the distance between the charge and the point is tripled,the potential becomes

Quizplus · Accepted Answer

According to the problem, the equipotential lines are at 100 V interval, which means the potential difference between two adjacent lines is 100 V. This also means that the potential difference between any two points on the same equipotential line is 100 V.

Now, let's consider the potential at a point due to a unit positive charge to be V. If we triple the distance between the charge and the point, the distance becomes 3x. We know that the potential due to a point charge varies inversely with the distance, so the new potential would be V/3.

Therefore, the potential becomes V/3 when the distance between the charge and the point is tripled. This matches with option A, so it is the correct choice.

Use the Following Figure to Answer the Next Problem