18. [1pt] Diagrams A and B show the electric potential along the x-axis in two d

Question

18. [1pt]
Diagrams A and B show the electric potential along the x-axis in two different situations. Answer each of the questions below with True (T), False (F), or Can not tell (C). If, for example, the answer to the first question is True, the answer to the second is Can Not Tell, and the answer to the others is False, enter TCFFFF.

A. The electric potential at x = 5 m in Diag. A is larger than the electric potential at x = 4 m in Diag. B.

B. The work done by you to bring a positive charge from infinity to the point x = 1 m in Diag. A is greater than zero.

C. The magnitude of the electric field at x = 4 m in Diag. A is larger than the magnitude of the electric field at x = 2 m in Diag. B.

D. An electric dipole with its positive charge at y = 0.01 mm and its negative charge at y = -0.01 mm placed at x = 2 m in Diag. A and released will initially rotate clockwise.

E. A positive charge placed at x = 2 m in Diag. A and released will accelerate right.

F. The electric field at x = 4 m in Diag. B points to the left.

Thanks !!!

Explanation / Answer

A. True. It is clear from the diag that A is at a positive potential while B is at a negative potential.
B. True. As Work done is equal to change in potential energy and there is a increase in potential energy.
C. True. Diag A has higher slope than B for mentioned points.
D. False. Electric field is in the positive x direction in this region and the dipole aligns with it.
E. True. Electric field is in the positive x direction and it will accelerate right.
F. False. It points to the right.

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