Consider the following. (a) In figure ( a ), what is the potential at point P du
ID: 1367238 • Letter: C
Question
Consider the following.
(a) In figure (a), what is the potential at point P due to charge Q at distance R from P? Set V = 0 at infinity.
Q/(40R) Q/(820R) 9Q/(820R) Q/(360R)
(b) In figure (b), the same charge Q has been spread uniformly over a circular arc of radius R and central angle 40°. What is the potential at point P, the center of curvature of the arc?
Q/(40R) Q/(820R) 9Q/(820R) Q/(360R)
(c) In figure (c), the same charge Q has been spread uniformly over a circle of radius R. What is the potential at point P, the center of the circle?
Q/(40R) Q/(820R) 9Q/(820R) Q/(360R)
(d) Rank the three situations according to the magnitude of the electric field that is set up at P, greatest first. (Use only ">" or "=" symbols. Do not include any parentheses around the letters or symbols.)
Explanation / Answer
a) Q/(40R)
b) Q/(40R)
c) Q/(40R)
d) Ea>Eb>Ec