(4.) Two charges of equal magnitude Q are held a distance d apart. Consider only

Question

(4.) Two charges of equal magnitude Q are held a distance d apart. Consider         only points on the line passing through both charges and clearly explain your answers to the following:

(a) If the two charges have the same sign, find the location of all points, if any, where the electric potential is zero. Is the electric field also zero at these points?

(b) If the two charges have the same sign, find the location of all points, if any, where the electric field is zero. Is the electric potential also zero at these points?

(c) Repeat part (a) above for two charges having opposite signs.

(d) Repeat part (b) above for two charges having opposite signs.

(e) Can you conclude that the electric field is always zero at any point where the electric potential is zero?

Likewise, can you conclude that the electric potential always zero at any point where the electric field is zero?

Explanation / Answer

A) C) There are no such points

B) A) Midway between charges

C) A) Midway between charges

D) C) There are no such points

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