1. Two point sources, one with a charge of -3 nC and the other +9 nC, are placed 3m apart as shown below. A third charge is placed at point P, 4 m to the right of the -3nC source. -3nC 3 m 4 m +9 nC ★P a) Find the magnitude and direction of the net field at point P. b) Find a location where the net field is zero (if the negative source is at (0,0) what are the coordinates of this point?) Add it to the diagram and label it O. c) Find the approximate field at a test point M that is 1 km (1000 m) to the right of P
1. Two point sources, one with a charge of -3 nC and the other +9 nC, are placed 3m apart as shown below. A third charge is placed at point P, 4 m to the right of the -3nC source. -3nC 3 m 4 m +9 nC ★P a) Find the magnitude and direction of the net field at point P. b) Find a location where the net field is zero (if the negative source is at (0,0) what are the coordinates of this point?) Add it to the diagram and label it O. c) Find the approximate field at a test point M that is 1 km (1000 m) to the right of P
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Transcribed Image Text:1. Two point sources, one with a charge of -3 nC and the other +9 nC, are placed 3m apart as shown
below. A third charge is placed at point P, 4 m to the right of the -3nC source.
-3nC
3 m
4 m
+9 nC
*P
a) Find the magnitude and direction of the net field at point P.
b) Find a location where the net field is zero (if the negative source is at (0,0) what are the coordinates of
this point?) Add it to the diagram and label it O.
c) Find the approximate field at a test point M that is 1 km (1000 m) to the right of P
d) By what factor will the magnitude of the field change if you move M from 1 km to 3 km away?
e) Find the magnitude and direction of the force on each of -1pC test charges placed at M, O, and P.
Expert Solution
Step 1
"Since you have posted a question with multiple subparts, we will solve the first three subparts for you. To get the remaining subpart solved please repost the complete question and mention the subparts to be solved."
Electric Field: Electric field at a given point can be defined as the electric force that will act on a unit positive charge assumed to be present at that point.
The magnitude of the electric field due to a point charge at distance from it is given by the following formula
where is Coulomb's constant.
The direction of the electric field is away from the positive charge and vice versa.
NOTE:
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