The diagram shows the E field lines (with arrows) and the equipotential contours

Question

The diagram shows the E field lines (with arrows) and the equipotential contours for a certain charge configuration. Select T-True or F-False for the following statements. If the first is true and the rest false, enter TFFF. The equipotential and field lines shown could represent those of a positive point charge, The E-Field at A is weaker than at B. An electron placed at B will move towards A. A dipole with centre at C and free to rotate about C will rotate such that the positive pole swings towards B Assuming that these contours are those of a point charge at the origin, calculate the value of the charge.

Explanation / Answer

25)
TFTT

(26)
V = K*q/R
900 = (9.0*10^9 * q)/0.1
q = 1 * 10^-7 C

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