Question 8

A and B are two small spheres separated by a distance of 0,70 m. Sphere A carries a charge of +1,5 x 10^-6 C and sphere B carries a charge of -2,0 x 10^-6 C.

P is a point between spheres A and B and is 0,40 m from sphere A, as shown in the diagram above.

8.1 Define the term electric field at a point. (2)

8.2 Calculate the magnitude of the net electric field at point P. (4)

8.3 A point charge of magnitude 3,0 x 10^-9 C is now placed at point P.

Calculate the magnitude of the electrostatic force experienced by this charge. (3)

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