A charge per unit length given by (x) = bx, where b = 12 nC/m2, ...

[amal]

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

[bhavsar]

Answer to Question 1

a

Answer to Question 2

b

[amal]

Gracias!

[xiaomengxian]

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