How can we theoretically find the electric field at a point due to many pointcharges? *Simply add the magnitudes of each electric field due to each charge.Perform vector addition on the individual electric field due to each charge.First add all the positive charge and subtract all the negative charge then divide it bythe sum of the distance of each charge.Divide each charge on its distance from the point. Then, get the sum of each.What is NOT true about the voltage? *It is the potential difference between two pointsIt is the work done per charge to move it from one point to anotherIt is the electric potential at one pointIt has a unit of Joules/meter.How does a capacitor store electric potential energy? *By preventing the charges from a neutral conductor to move to the other conductorBy moving the charges from one plate to another and discharging it when desired.By moving the protons of one plate to anotherBy putting a conductor between the two plates of a capacitor How does electric potential energy and electric potential differ? *These two terms are the same.The electric potential energy is a property of the system of charges while electricpotential is a property of a point in space in an electric field.O The electric potential energy is a scalar while the electric potential is a vectorThe electric potential energy is the voltage and electric potential is the work done tomove he charge.What should be the dimensions of a parallel plate capacitor such that itscapacitance is maximum? *Minimum plate area, minimum separation of platesMinimum plate area, maximum separation of platesMaximum plate area, minimum separation of platesMaximum plate area, maximum separation of plates

How can we theoritically find the electric field What is not true about voltage.

How can we theoretically find the electric field at a point due to many point charges? O Simply add the magnitudes of each electric field due to each charge. Perform vector addition on the individual electric field due to each charge. First add all the positive charge and subtract all the negative charge then divide it by the sum of the distance of each charge. Divide each charge on its distance from the point. Then, get the sum of each. What is NOT true about the voltage? " O It is the potential difference between two points O It is the work done per charge to move it from one point to another O It is the electric potential at one point O It has a unit of Joules/meter.

How can we theoretically find the electric field at a point due to many point charges? O Simply add the magnitudes of each electric field due to each charge. Perform vector addition on the individual electric field due to each charge. First add all the positive charge and subtract all the negative charge then divide it by the sum of the distance of each charge. Divide each charge on its distance from the point. Then, get the sum of each. What is NOT true about the voltage? " O It is the potential difference between two points O It is the work done per charge to move it from one point to another O It is the electric potential at one point O It has a unit of Joules/meter.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter5: Electric Charges And Fields

Section: Chapter Questions

Problem 101P: In this exercise, you practice electric field lines. Make sure you represent both the magnitude and...

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A very long line of charge with a linear charge density, , is parallel to another very long line of charge with a linear charge density, 2. Both lines are parallel to the y-axis, and are the same distance r from the y-axis, where the first wire is to the left of the origin and the second is to the right. Use Gausss law and the principle of superposition to find an expression for the magnitude of the electric field at the origin.
Three charges are positioned at the cornets of a parallelogram as shown below. (a) If Q=8.0C what is the electric field at the unoccupied comer? (b) What is the force on a 5.0C charge placed at this corner?
Compare and contrast the Coulomb force field and the electric field. To do this, make a list of five properties for the Coulomb force field analogous to the five properties listed for electric field lines. Compare each item in your list of Coulomb force field properties with those of the electric field—are they the same or different? (For example, electric field lines cannot cross. Is the same true for Coulomb field lines?)
Consider an electric field that is uniform in direction throughout a certain volume. Can it be uniform in magnitude? Must it be uniform in magnitude? Answer these questions (a) assuming the volume is filled with an insulating material carrying charge described by a volume charge density and (b) assuming the volume is empty space. State reasoning to prove your answers.
Bare free charges do not remain stationary when close together. To illustrate this, calculate the acceleration of two isolated protons separated by 2.00 nm (a typical distance between gas atoms). Explicitly show how you follow the steps in the Problem-Solving Strategy for electrostatics.
A test charge of +3 C is at a point P where an external electric field is directed to the right and has a magnitude of 4 106 N/C. If the test charge is replaced with another test charge of 3 C, what happens to the external electric field at P? (a) It is unaffected. (b) It reverses direction. (c) It changes in a way that cannot be determined.
In this exercise, you practice electric field lines. Make sure you represent both the magnitude and direction of the electric field adequately. Note that the number of lines into or out of charges is proportional to the charges. (a) Draw the electric field lines map for two charges +20C and 20C situated 5 cm from each other. (b) Draw the electric field lines map for two charges +20C and +20C situated 5 cm from each other. (c) Draw the electric field lines map for two charges +20C and 30C situated 5 cm from each other.
A very large, thin, flat plate of aluminum of area A has a total charge Q uniformly distributed over its surfaces. Assuming the same charge is spread uniformly over the upper surface of an otherwise identical glass plate, compare the electric fields just above the center of the upper surface of each plate.
Two point charges attract each other with an electric force of magnitude F. If the charge on one of the particles is reduced to one-third its original value and the distance between the particles is doubled, what is the resulting magnitude of the electric force between them? (a) 112F (b) 13F (c) 16F (d) 34F (e) 32F
Three equal positive charges q are at the comers of an equilateral triangle of side a as shown in Figure P19.28. Assume the three charges together create an electric field. (a) Sketch the field lines in the plane of the charges. (b) Find the location of one point (other than ) where the electric field is zero. What are (c) the magnitude and (d) the direction of the electric field at P due to the two charges at the base?
An object with negative charge is placed in a region of space where the electric field is directed vertically upward. What is the direction of the electric force exerted on this charge? (a) It is up. (b) It is down. (c) There is no force. (d) The force can be in any direction.