QUESTION 2 2.1 Three chаrged pаrticles Q1, Q2 аnd Q3 carrying charges оf +2 x 10-5 C, -2 x 10-4 C and +2 x 10-4 C respectively are pоsitiоned as shown in the diagram below. 2.1.1 State Coulomb’s Law in words (2) 2.1.2 Calculate the number of excess electrons on charge Q2. (3) 2.1.3 Calculate the net electrostatic force exerted on charge Q1 by the charges Q2 and Q3. (6) 2.2 Two charged particles Q1 with a charge of +3 μC and Q2 with a charge of -5 μC are placed 30 cm apart as shown in the diagram below. Point P is 10 cm east of charge Q2. 2.2.1 Define the term electric field in words. (2) 2.2.2 Calculate the magnitude and direction of the net electric field at point P. (6) 2.2.3 An electron is placed at point P. Calculate the magnitude of the net electrostatic force exerted on the electron. (3) [22]
QUESTION 2 2.1 Three chаrged pаrticles Q1, Q2 аnd Q3 carrying charges оf +2 x 10-5 C, -2 x 10-4 C and +2 x 10-4 C respectively are pоsitiоned as shown in the diagram below. 2.1.1 State Coulomb’s Law in words (2) 2.1.2 Calculate the number of excess electrons on charge Q2. (3) 2.1.3 Calculate the net electrostatic force exerted on charge Q1 by the charges Q2 and Q3. (6) 2.2 Two charged particles Q1 with a charge of +3 μC and Q2 with a charge of -5 μC are placed 30 cm apart as shown in the diagram below. Point P is 10 cm east of charge Q2. 2.2.1 Define the term electric field in words. (2) 2.2.2 Calculate the magnitude and direction of the net electric field at point P. (6) 2.2.3 An electron is placed at point P. Calculate the magnitude of the net electrostatic force exerted on the electron. (3) [22]
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