AP Free Response Question
2001 B3
Printer Friendly Version
Four charged particles are held fixed at the corners of a square of side
s
. All the charges have the same magnitude
Q
, but two are positive and two are negative. In Arrangement 1, shown above, charges of the same sign are at opposite corners. Express your answers to parts (a) and (b) in terms of the given quantities and fundamental constants.
(a) For Arrangement 1, determine the following.
i. The electrostatic potential at the center of the square
ii. The magnitude of the electric field at the center of the square
The bottom two charged particles are now switched to form Arrangement 2, shown below, in which the positively charged particles are on the left and the negatively charged particles are on the right.
(b) For Arrangement 2, determine the following.
i. The electrostatic potential at the center of the square
ii. The magnitude of the electric field at the center of the square
(c) In which of the two arrangements would more work be required to remove the particle at the upper right corner from its present position to a distance a long way away from the arrangement? Justify your answer.
Topic Formulas
Description
Published Formula
capacitance
Coulomb's Law
electric field
electric potential energy
energy stored in a capacitor
parallel-plate capacitor
potential and electric field strength
potential due to a collection of point charges
Related Documents
Lab:
Labs -
Aluminum Foil Parallel Plate Capacitors
Labs -
Electric Field Mapping
Labs -
Electric Field Mapping 2
Labs -
Mass of an Electron
Labs -
RC Time Constants
Resource Lesson:
RL -
A Comparison of RC and RL Circuits
RL -
Capacitors and Dielectrics
RL -
Continuous Charge Distributions: Charged Rods and Rings
RL -
Continuous Charge Distributions: Electric Potential
RL -
Coulomb's Law: Beyond the Fundamentals
RL -
Coulomb's Law: Suspended Spheres
RL -
Derivation of Bohr's Model for the Hydrogen Spectrum
RL -
Dielectrics: Beyond the Fundamentals
RL -
Electric Field Strength vs Electric Potential
RL -
Electric Fields: Parallel Plates
RL -
Electric Fields: Point Charges
RL -
Electric Potential Energy: Point Charges
RL -
Electric Potential: Point Charges
RL -
Electrostatics Fundamentals
RL -
Famous Experiments: Millikan's Oil Drop
RL -
Gauss' Law
RL -
LC Circuit
RL -
Parallel Plate Capacitors
RL -
Shells and Conductors
RL -
Spherical, Parallel Plate, and Cylindrical Capacitors
Review:
REV -
Drill: Electrostatics
REV -
Electrostatics Point Charges Review
Worksheet:
APP -
The Birthday Cake
APP -
The Electrostatic Induction
CP -
Coulomb's Law
CP -
Electric Potential
CP -
Electrostatics: Induction and Conduction
NT -
Electric Potential vs Electric Potential Energy
NT -
Electrostatic Attraction
NT -
Lightning
NT -
Photoelectric Effect
NT -
Potential
NT -
Van de Graaff
NT -
Water Stream
WS -
Capacitors - Connected/Disconnected Batteries
WS -
Charged Projectiles in Uniform Electric Fields
WS -
Combinations of Capacitors
WS -
Coulomb Force Extra Practice
WS -
Coulomb's Law: Some Practice with Proportions
WS -
Electric Field Drill: Point Charges
WS -
Electric Fields: Parallel Plates
WS -
Electric Potential Drill: Point Charges
WS -
Electrostatic Forces and Fields: Point Charges
WS -
Electrostatic Vocabulary
WS -
Parallel Reading - The Atom
WS -
Standard Model: Particles and Forces
TB -
Advanced Capacitors
TB -
Basic Capacitors
TB -
Electric Field Strength vs Electric Potential
CB-ETS
Copyright © 1970-2022
All rights reserved.
Used with
permission
Mainland High School
Daytona Beach, FL 32114