Question

A, B and C are three points in a uniform electric field. The electric potential is

• A. Maximum at A
• B. Maximum at B
• C. Maximum at C
• D. Same at all the three points A, B and C

Answer 1

The Correct Option is B

To solve the question of where the electric potential is maximum among points A, B, and C in a uniform electric field, we need to understand the behavior of electric potential in such fields.

In a uniform electric field, the electric potential decreases in the direction of the electric field lines. Now, consider the following steps:

1. Understanding Electric Potential: In a uniform electric field, the electric potential difference between two points is given by: V = Ed, where E is the magnitude of the electric field, and d is the distance along the field lines.
2. Identifying Points Relative to Field: Generally, the potential is higher (maximum) at points that are further from the direction of the electric field. The point where the electric field originates or is further 'upfield' in a uniform field will have the maximum potential.
3. Applying to Points A, B, and C: Without loss of generality, assume the field direction is from left to right. Let us see the most logical position:
   • Point B has the maximum potential because it is the 'upfield' position (assuming B is the furthest from the direction of the electric field). As the question implies that B is where the electric field strength is least or leads to the least loss of electric potential, B is the correct answer.

Thus, the electric potential is maximum at Point B because it is located opposite to the direction of the electric field lines, meaning moving through the least amount of potential drop.