(a) Two charges Q1 = -3 µC and Q2 = -4 µC experience an
electrostatic force of F = 8816 N. Is the force between the two
charges attractive or repulsive? (1 mark)
(b) Determine the distance r between the two charges. Give your
answer in millimetres to 1 decimal place. (2 marks)
(c) A copper wire of length 1.5 m and diameter 1 mm has a
resistance of 33 mW. Calculate the resistivity of the copper to 2
decimal places.
(a) Two charges Q1 = -3 µC and Q2 = -4 µC experience an electrostatic force of F = 8816 N. Is the force between the two
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(a) Two charges Q1 = -3 µC and Q2 = -4 µC experience an electrostatic force of F = 8816 N. Is the force between the two
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