Question

Four charges +5 μC, +6 μC, -3 μC and +2 μC

are located respectively at the corners A, B, C

and D of a rectangle of sides 30 and 40 cm.

(a) Calculate the magnitude and direction of the

net electric field at the centre of the

rectangle.

(b) What will be the net electric force on a

charge +1.5 μC placed at the centre?
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Answer 1

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