EM HW-94 Electric potential difference 2. A positive charge of magnitude q, is s
ID: 1398787 • Letter: E
Question
EM HW-94 Electric potential difference 2. A positive charge of magnitude q, is shown in the diagram below a Points B and C are a distance r, away from the charge and point A is a distance 2r, from it. i. Indicate the direction of the electrie field at points A. B and C on the diagram. ii. Let W represent the absolute value of the work done by an external agent in moving a small test charge from point A to point B Would the absolute value of the work done by an external agent in moving the same test charge from point B to point C be greater than, less than, or equal to WA? Explain. zual to DWne Bosauge onses have e ge in Spume radius or distance So he oorle toill be the game Would the absolute value of the work done by an external agent in moving the same test charge from point A to point C be greater than, less than or equal to W Explain. -reater than uhs,eaause the diglenae from luore work to do b. A large metal sphere with zero net charge is now placed to the left of point A as shown. Sketch the charge distribution on the metal sphere in the diagram at right. i. Has the magnitude of the electric field at the following points increased, decreased, or remained the same? Explain. ii. point B Because the sphare is too as point C Remained he ame frou Potiu e o the aphere do vothn to the elestric folaExplanation / Answer
2 a i)
A positive charge behaves like a light bulb emitting rays in all direction away from it. same way positive charge has electric feild lines in all directions.
ii)
At B and C , electric potential is same, so work done to move a test charge from B to C would be 0.
At A , electric potential is smaller as compared to B , so there will work done which will be greater than WBc
At B and C potential is same , so work done from A to C and A to B would be same
b) i) for the sketch part , we simply reverse . left side of sphere is positive and right side is negative. this is due to electrostatic induction.
ii)
At B and C , electric remains same since the sphere is neural
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.