A force of 100N is directed north on a -20µC point charge. What is the magnitude of the electric field at this point?

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Chapter1: Units, Trigonometry. And Vectors
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Instruction: Solve the following problems completely and neatly. Write your solution in a clean sheet of yellow
раper.
1. A force of 100N is directed north on a -20µC point charge. What is the magnitude of the
electric field at this point?
2. A positive charge, q = +25 nC, is on the y-axis at y = +5.00 cm. (a) Determine the magnitude and
direction of the electric field at the origin. (b) What will be the magnitude and direction of the electric
field at the origin if the charge is -25 nC?
3. Three charges and their specific locations are given as follows:
q1 = - 20 nC; (0, 3.00 cm)
q2 = + 30 nC; (-2.00 cm, 5.00 cm)
q3 = + 10 nC; (-4.00 cm, 0 cm)
Determine the magnitude and direction of the net electric field at the field point P (3.00 cm, 0)
using component method.
4. Calculate the magnitude and direction of the electric field 0.45 m from a+ 7.85 x 10s C point charge.
5. An electric dipole consists of two equal but unlike charges separated by a distance. Two point charges,
qı = +4.5 x 10-6 C and q2= -4.5 x 10 6 C, are separated by 6.4 x 102 m, forming an electric dipole as
shown in the figure. Find the electric field halfway between the dipole.
Transcribed Image Text:Instruction: Solve the following problems completely and neatly. Write your solution in a clean sheet of yellow раper. 1. A force of 100N is directed north on a -20µC point charge. What is the magnitude of the electric field at this point? 2. A positive charge, q = +25 nC, is on the y-axis at y = +5.00 cm. (a) Determine the magnitude and direction of the electric field at the origin. (b) What will be the magnitude and direction of the electric field at the origin if the charge is -25 nC? 3. Three charges and their specific locations are given as follows: q1 = - 20 nC; (0, 3.00 cm) q2 = + 30 nC; (-2.00 cm, 5.00 cm) q3 = + 10 nC; (-4.00 cm, 0 cm) Determine the magnitude and direction of the net electric field at the field point P (3.00 cm, 0) using component method. 4. Calculate the magnitude and direction of the electric field 0.45 m from a+ 7.85 x 10s C point charge. 5. An electric dipole consists of two equal but unlike charges separated by a distance. Two point charges, qı = +4.5 x 10-6 C and q2= -4.5 x 10 6 C, are separated by 6.4 x 102 m, forming an electric dipole as shown in the figure. Find the electric field halfway between the dipole.
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