Exercise 15.1—Coulomb’s law 1. 201.18 N 2. 794.78 N 3. 6.23 1011 F m1 4. 2.92 5. 84.55 kN 6. A: 220.3 N left, B: 352.41 N right, C: 132.11 N left 7. (i) 8.05 N
Exercise 15.2—Electric fields 1. 333.33 N C1
2. 1.43 109 N C1 3. (i) 1.34 107 N C1 4. (i) 1.12 109 N C1
(ii) 67.06 N (ii) 1.28 109 N C1 Chapter 16:Voltage and Capacitance
Exercise 16.1—Potential difference 1. 4 V 2. 50 V 3. 0.025 J
Exercise 16.2—Capacitance 1. 144 C
2. 1.5 1011 F 3. 5.93 1013 F 4. 0.0144 J 5. (i) 2.492 1012 F