Homework Answers
a) work done by external force is zero, work done by electrostatic force is positive only if two charges are of same sign. And its electrostatic potential energy gets increases as distance decreases
So option a & b are correct
B) work done increases
So it is work done by proton
Option e. Is correct
Add Answer to:
a)
b)
A point charge Q is held fixed in place and another point charge q...
a) A point charge +q is placed at the origin. By explicitly calculating the relevant line...
a) A point charge +q is placed at the origin. By explicitly calculating the relevant line integral, determine how much exter- nal work must be done to bring another point charge +q from infinity to the point r2- ay? Consider the difference between external work and work done by the force. {2] b) Both of these charges are held fixed and a third charge +q is now brought from infinity to position F3 a+ay. Re- peat the same type of...
Question 1 (20 pts.) Two point objects are placed on the x-axis with a separations d...
Question 1 (20 pts.) Two point objects are placed on the x-axis with a separations d between them as seen in the figure having equal and opposite charges. For q = 2C, and d = 0.1m: (a) What is the electric field E (vector) at the point P? (b) What is the electric potential V (scalar) at the point P? (c) What is the total electrostatic potential energy U of this system? (d) A third particle with charge Q =...
Calculate the work WAB done by the electrostatic force on a particle of charge q as...
Calculate the work WAB done by the electrostatic force on a
particle of charge q as it moves from A to B. Express your answer
in terms of some or all the variables E, q, L, and ?.
Constants Learning Goal: To review the concept of conservative forces and to understand that electrostatic forces are, in fact, conservative. Calculate the work WAB done by the electrostatic force on a particle of charge q as it moves from A to B....
The figure shows a fixed (non-moving) charge Q > 0 and four points, A, B, C,...
The figure shows a fixed (non-moving) charge Q > 0 and four points, A, B, C, and D. Points A and D are the same distance from charge Q and points B and C are the same distance from charge Q. Point B is directly between point A and Q and point C is directly between point D and Q A +Q The dashed lines are on circles centered at the charge Q. A) (GR, PS) A proton (interacting with...
A point charge q = +39.0 µC moves from A to B separated by a distance...
A point charge q = +39.0 µC moves from A to B separated by a distance d = 0.184 m in the presence of an external electric field E with arrow of magnitude 295 N/C directed toward the right as in the following figure. A positive point charge q is initially at point A, then moves a distance d to the right to point B. Electric field vector E points to the right. (a) Find the electric force exerted on...
A point charge q = +41.0 µC moves from A to B separated by a distance...
A point charge q = +41.0 µC moves from A to B separated by a distance d = 0.167 m in the presence of an external electric field E with arrow of magnitude 265 N/C directed toward the right as in the following figure. A positive point charge q is initially at point A, then moves a distance d to the right to point B. Electric field vector E points to the right. (a) Find the electric force exerted on...
Four charges are placed at the corners of a square, where q is positive (q >...
Four charges are placed at the corners of a square, where q is
positive (q > 0). Initially there is no charge in the center of
the square.
a) Find the work W required to bring the charge Qf = +q from
infinity and place it at the center of the square.
b) What is the magnitude of the electric force on the charge q
when it is placed at the center of the square?
c) What is the magnitude...
Equipotential surfaces A positive point charge is surrounded by an equipotential surface A, which has a...
Equipotential surfaces A positive point charge is surrounded by an equipotential surface A, which has a radius of rA. A positive test charge moves from surface A to another equipotential surface B, which has a radius rB. In the process, the electric force does negative work (a) Does the electric force acting on the test charge have the same or opposite direction as the displacement of the test charge? O The electric force has the same direction as the displacement...
Consider a positive source charge Q, that is being held in place. A nearby negative test...
Consider a positive source charge Q, that is being held in
place. A nearby negative test charge q moves from point A to point
B.
a) What is the direction of the electric force that the source
charge exerts on the test charge?
b) As the negative test charge moves from point A to point B,
does the electric force cause it to speed up, slow down, or move at
a constant velocity?
c) As the negative test charge moves...
A point charge q = +39.0 μC moves from A to B separated by a distance...
A point charge q = +39.0 μC
moves from A to B separated by a distance d = 0.171 m in the
presence of an external electric field E with arrow of magnitude
300 N/C directed toward the right as in the following figure.
4. +-22 points SerCP11 16 P.006 My Notes Ask Your Teacher a distance d -0.171 m in the presence of an external electric field E of magnitude 300 N/C directed toward the right as in A...
a) A point charge +q is placed at the origin. By explicitly calculating the relevant line integral, determine how much exter- nal work must be done to bring another point charge +q from infinity to the point r2- ay? Consider the difference between external work and work done by the force. {2] b) Both of these charges are held fixed and a third charge +q is now brought from infinity to position F3 a+ay. Re- peat the same type of...
Question 1 (20 pts.) Two point objects are placed on the x-axis with a separations d between them as seen in the figure having equal and opposite charges. For q = 2C, and d = 0.1m: (a) What is the electric field E (vector) at the point P? (b) What is the electric potential V (scalar) at the point P? (c) What is the total electrostatic potential energy U of this system? (d) A third particle with charge Q =...
Calculate the work WAB done by the electrostatic force on a
particle of charge q as it moves from A to B. Express your answer
in terms of some or all the variables E, q, L, and ?.
Constants Learning Goal: To review the concept of conservative forces and to understand that electrostatic forces are, in fact, conservative. Calculate the work WAB done by the electrostatic force on a particle of charge q as it moves from A to B....
The figure shows a fixed (non-moving) charge Q > 0 and four points, A, B, C, and D. Points A and D are the same distance from charge Q and points B and C are the same distance from charge Q. Point B is directly between point A and Q and point C is directly between point D and Q A +Q The dashed lines are on circles centered at the charge Q. A) (GR, PS) A proton (interacting with...
Four charges are placed at the corners of a square, where q is
positive (q > 0). Initially there is no charge in the center of
the square.
a) Find the work W required to bring the charge Qf = +q from
infinity and place it at the center of the square.
b) What is the magnitude of the electric force on the charge q
when it is placed at the center of the square?
c) What is the magnitude...
Equipotential surfaces A positive point charge is surrounded by an equipotential surface A, which has a radius of rA. A positive test charge moves from surface A to another equipotential surface B, which has a radius rB. In the process, the electric force does negative work (a) Does the electric force acting on the test charge have the same or opposite direction as the displacement of the test charge? O The electric force has the same direction as the displacement...
Consider a positive source charge Q, that is being held in
place. A nearby negative test charge q moves from point A to point
B.
a) What is the direction of the electric force that the source
charge exerts on the test charge?
b) As the negative test charge moves from point A to point B,
does the electric force cause it to speed up, slow down, or move at
a constant velocity?
c) As the negative test charge moves...
A point charge q = +39.0 μC
moves from A to B separated by a distance d = 0.171 m in the
presence of an external electric field E with arrow of magnitude
300 N/C directed toward the right as in the following figure.
4. +-22 points SerCP11 16 P.006 My Notes Ask Your Teacher a distance d -0.171 m in the presence of an external electric field E of magnitude 300 N/C directed toward the right as in A...
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