If the electric potential at a point is increased, what happens to the work done
Practice Questions
Q1
If the electric potential at a point is increased, what happens to the work done by an external force on a positive charge moved to that point?
Increases
Decreases
Remains constant
Cannot be determined
Questions & Step-by-Step Solutions
If the electric potential at a point is increased, what happens to the work done by an external force on a positive charge moved to that point?
Correct Answer: Work done by the external force increases.
Step 1: Understand what electric potential means. It is the amount of work needed to move a positive charge to a point in an electric field.
Step 2: Recognize that when electric potential increases, it means that more work is required to move a positive charge to that point.
Step 3: Realize that an external force is needed to move the charge against the electric field. This external force does work on the charge.
Step 4: Conclude that if the electric potential increases, the external force must do more work to move the positive charge to that point.
Electric Potential – Electric potential is the amount of electric potential energy per unit charge at a point in an electric field.
Work Done by External Force – The work done by an external force is the energy required to move a charge against the electric field.
Relationship Between Potential and Work – As electric potential increases, more work is required to move a positive charge to that point against the electric field.