Author Question: A charge per unit length given by (x) = bx, where b = 12 nC/m2, is distributed along the x axis from ... (Read 149 times)

amal · **on:** Jul 28, 2018

A charge per unit length given by (x) = bx, where b = 12 nC/m2, is distributed along the x axis from x = +9.0 cm to x = +16 cm. If the electric potential at infinity is taken to be zero, what is the electric potential at the point P on the y axis at y = 12 cm?
a. 5.4 V
b. 7.2 V
c. 9.0 V
d. 9.9 V
e. 16 V

Question 2

Identical point charges (+30 C) are placed at the corners of a rectangle (4.0 m 6.0 m). How much external energy is required to bring a charge of 55 C from infinity to the midpoint of one of the 6.0-m long sides of the rectangle?
a. 22 J
b. 16 J
c. 13 J
d. 19 J
e. 8.0 J