B. Consider the following conversation between John and Myra:
ο· John: For points outside a sphere, the distance π in πΈ = π π
π2 should be measured from the surface of
that sphere.
ο· Myra: I disagree. For a point outside the sphere, the distance π should be measured from the center of
that sphere because the uniform sphere of charge behaves as a point charge at the center.
With whom do you agree?
C. Calculate the total electric field at each point (magnitude and direction):
Point A: Magnitude: (donβt substitute anything; your answer should be in terms of k, Q, and R.)
Point A: Direction:
Point B: Magnitude: (donβt substitute anything; your answer should be in terms of k, Q, and R.)
Point B: Direction:
Point C: Magnitude:
Point C: Direction:
Point D: Magnitude: we will do this in several steps.
1. Calculate the x and y components of the electric field caused by the sphere on the left at point D. (Donβt
substitute anything; the components should be in terms of k, Q, and R.)
2. Calculate the x and y components of the electric field caused by the sphere on the right at point D.