Point P is located at the origin of a coordinate plane.
Object A of charge 2e-9 C is located on the x-axis of a coordinate plane at x = 0.4 m.
Object B of charge -4e-9 C is located on the y-axis of a coordinate plane at y = 0.5 m.
Calculate the direction (angle formed with the positive x-axis) of the net
electric field at point P due to objects A and B.
-46.801°
153.598°
-52.001°
127.999°
115.199°
Point P is located at the origin of a coordinate plane. Object A of charge -5e-9 C is located on the x-axis of a coordinate plane at x = 0.1 m. Object B of charge -2e-9 C is located on the y-axis of a coordinate plane at y = 0.2 m.Calculate the magnitude of the net electric field at point P due to objects A and B.
4522.444 N ⁄ C
5879.177 N ⁄ C
4070.2 N ⁄ C
2713.466 N ⁄ C
5426.933 N ⁄ C
1
Expert's answer
2019-07-24T15:42:52-0400
1) Calculate the angle. First, determine the field at point A on the x-axis:
EA=rA2kqA=112.34 V/m.
At point B on the y-axis:
EB=rB2kqB=−143.80 V/m.
Hence, the angle will be
α=90∘+atan143.80112.34=128∘.
2) The magnitude of the vector can be calculated the same way:
EA=rA2kqA=−4493.78 V/m.
EB=rB2kqB=−449.38 V/m.
these vectors are at the right angle to each other, so the total vector at point P is
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