뒤로Electric Charge Redistribution on Conductors – Conceptual Guidance
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Q1. Electric charge will quickly redistribute on an electrical conductor such that:
Background
Topic: Electrostatics – Conductors in Electrostatic Equilibrium
This question tests your understanding of how electric charge behaves on conductors, especially when they reach electrostatic equilibrium. It is important to know what happens to the electric field and electric potential on and around conductors in this state.
Key Terms and Concepts:
Conductor: A material in which electric charges can move freely.
Electrostatic Equilibrium: The state where charges are at rest and the electric field inside the conductor is zero.
Electric Potential (V): The amount of electric potential energy per unit charge at a point in space.
Electric Field (E): The force per unit charge exerted on a test charge at a point in space.
Step-by-Step Guidance
Recall that in a conductor at electrostatic equilibrium, charges are free to move. They will continue to move until there is no net force acting on them.
Think about what happens to the electric field inside the conductor. If there were a nonzero electric field, charges would keep moving.
Consider the relationship between electric field and electric potential. If the electric field inside is zero, what does that imply about the potential at different points within the conductor?
Now, compare the answer choices: Which one best describes the condition that must be true everywhere on the conductor's surface when equilibrium is reached?
Try solving on your own before revealing the answer!
Final Answer: The electric potential is the same everywhere on the conductor.
At electrostatic equilibrium, the charges have redistributed themselves so that the electric potential is constant throughout the conductor. If there were any difference in potential, charges would move until equilibrium is reached. This is a fundamental property of conductors in electrostatics.
