14. [1pt] Four point charges are located on the corners of a square as shown in
ID: 1428616 • Letter: 1
Question
14. [1pt] Four point charges are located on the corners of a square as shown in the diagram below, with the origin marking the centre of the square. What is the electric potential at the origin?
Answer:
15. [1pt] What is the magnitude of the electric field at the origin set up by the four charges?
Answer:
16. [1pt] Select the direction of the electric field at the origin from the choices below; e.g., enter H.
Answer:
17. [1pt] How much work must the outside source do to bring another 1 µC charge in from infinity and place it at the origin?
Answer:
Please answer all the questions above.
A) D) G) B) E) + H) C) + F)Explanation / Answer
14.
PE due to a point charge at distance r is kq/r.
V = [kq/r] + [k(-q)/r] + [kq/r] + [kq/r]
V = 2kq/r
k = 9x 10^9, q = 1 x 10^-6 C and r = 1.41 m
V = 12765.96 Volt
15 .
magnitude of field due to a point charge at distance r is k|q| / r^2 .
direction -> radially away from +ve charge and opposite for negative charge.
Enet = [ kq/d^2] (-j) + [kq/d^2] (i) + [kq/d] j + [kq/d^2] i
= 2kq/d^2 i
k = 9x 10^9, q = 1 x 10^-6 C andd = 1.41 m
E =9053.87 N/C i
magnitude = 9053.87 N/C
16. direction -> i ( along x axis)
Ans(G)
17. work done =q deltaV = 1 x 10^-6 ( 12765.96 - 0 ) = 0.0128 J
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.