D1RT57 NEAR A POINT CHARGEELECTRIC POTENTIAL AT THREEDIMENSI

D1-RT57: NEAR A POINT CHARGE-ELECTRIC POTENTIAL AT THREE-DIMENSIONAL LOCATIONS There is a positive point charge +q located at (0, 0, 0) as shown in the three-dimensional region below. Within that region are points located on the corners of a cube as shown. -X x B Rank the electric potential at the labeled points OR All Cannot All the same zero determine 4 Greatest Least Explain your reasoning. D1-RT58: Two ELECTRIC CHARGES-ELECTRIC POTENTIAL In each figure, two charges are fixed in place on a grid, and a point near those particles is labeled P. All of the charges are the same size, Q, but they can be either positive or negative. Rank the strength (magnitude) of the electric potential at point P. OR 4 Least All All Cannot the same zero determine Greatest Explain your reasoning.

Solution

57)

Electric potential is inversely propotional to the distance from the charge.

So, the point which is farthest from the origin will be a lowest potential.

points A and D are closest to the origin. So, they are at higest potential

Then come B and E after then C which is farthest

So, the order is (A=D) > (B=E) > C

58)

Highest potential is due to the setup in D

Here both the charges are positive and the potentials due to both of them is additive.

Next comes C which has 0 potential as both the charges are equidistant and opposite in sign

Next there B and then comes A

So, the order D > C > B > A

55)

As all the charges are same in all the 4 cases and are equidistant from the point x. the positioning does not affect the potential.

So, all the potentials are same and 0<------answer

56)

point B will have greatest potential as it is nearest to the positive charge

then come points C and A which are at 0 potential

after that comes D

So, order is : B > (A=C) > D