CHAPTER 2

2.1 (a) Define and use capacitance

2.1 (b) Derive and determine the effective capacitance of capacitors in series & parallel

2.1 (c) Derive and use energy stored in a capacitor

2.2 (a) State the physical meaning of time constant and use τ = RC

2.2 (b) Sketch and explain the characteristics of Q-t and I-t graph for charging and discharging of a capacitor

2.2 (c) Use Q = Q₀e^(−1/RC) for discharging & Q = Q₀ (1 - e^(−1/RC)) for charging

2.3 (a) Define dielectric constant, εᵣ = ε/ε₀

2.3 (b) Describe the effect of dielectric on a parallel plate capacitor

2.3 (c) Calculate the capacitance of air filled capacitor, C₀ = (ε₀A)/d

2.3 (d) Use dielectric constant, εᵣ = ε/ε₀

2.3 (e) Use capacitance with dielectric, C = εᵣC₀