A negative charge is moved from point A to point B along anequipotential surface. Which of the following statements istrue for this case? A) Work is both required and performed in moving the negativecharge from point A to point B B) The negative charge performs work in moving from point A topoint B C) No work is required to move the negative charge from pointA to point B. D) Work is required to move the negative charge from point Ato point B Why? A negative charge is moved from point A to point B along anequipotential surface. Which of the following statements istrue for this case? A) Work is both required and performed in moving the negativecharge from point A to point B B) The negative charge performs work in moving from point A topoint B C) No work is required to move the negative charge from pointA to point B. D) Work is required to move the negative charge from point Ato point B Why?
Explanation / Answer
When a negative charge is moved from point A to point B alongan equipotential surface then No work is required to move thenegative charge from point A to point B because there will nopotential difference between the two points A and B . As work done in moving the charge through the potentialdifference V is W = q*V As V =0 then W = 0. Thus option C is correct.