b) Three + 3 nC point charges are fixed a distance of 12 mm apart, on the corners of an equilateral triangle, within a vacuum. (i) Sketch the lines of E in the space around the charges. (ii) Indicate the position where the electric field magnitude is zero and calculate the electric potential at this point. (iii) Calculate the magnitude of the forces on each of the three charges and indicate the direction of each force with a sketch. (iv) Calculate the work done in setting up the charges.
b) Three + 3 nC point charges are fixed a distance of 12 mm apart, on the corners of an equilateral triangle, within a vacuum. (i) Sketch the lines of E in the space around the charges. (ii) Indicate the position where the electric field magnitude is zero and calculate the electric potential at this point. (iii) Calculate the magnitude of the forces on each of the three charges and indicate the direction of each force with a sketch. (iv) Calculate the work done in setting up the charges.
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part b (iv) and part c
Transcribed Image Text:b)
Three + 3 nC point charges are fixed a distance of 12 mm apart, on the
corners of an equilateral triangle, within a vacuum.
(i) Sketch the lines of E in the space around the charges.
(ii) Indicate the position where the electric field magnitude is zero and
calculate the electric potential at this point.
(iii) Calculate the magnitude of the forces on each of the three charges
and indicate the direction of each force with a sketch.
(iv) Calculate the work done in setting up the charges.
c) Stating any approximations you make, estimate the electric field magnitude
and electric potential at a distance of 2 m from the centre of the triangle,
and indicate with a sketch the direction (relative to the sides of the triangle)
of the electric field at this point.
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