Four charges are arranged at the corners of a square as shown. Q1 is at (-L/2,L/

Question

Four charges are arranged at the corners of a square as shown. Q1 is at (-L/2,L/2), Q2 is at (L/2,L/2), point a is at the origin and Q1 is positive and Q1=Q2=-Q3=-Q4. Indicate TRUE or FALSE for each of the following statements.
a)At point a, the electric field points toward point c
b) At c, the electric field is parallel to the x axis.
c) The potential at a is greater (more positive) than the potential at c.
d) The potential at b is zero.
e) At point b, the electric field is zero.
f) The magnitude of the electric field at b is greater than at c
g) The points a, b, and c each lie on a different eqiopotential surface.

Explanation / Answer

(a) At point a, the electric field points toward point c.

FALSE

(b) At c, the electric field is parallel to the x axis.

FALSE

(c) The potential at a is greater (more positive) than the potential at c.

FALSE

(d) The potential at b is zero.

TRUE

(e) At point b, the electric field is zero.

FALSE

(f) The magnitude of the electric field at b is greater than at c.

TRUE

(g) The points a, b, and c each lie on a different eqiopotential surface.

FALSE

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