[Total = 10 marks] Question A2 Consider the circuit shown in Figure 1 to answer the following questions. R1 R2 RL Us 30 sin(100t +0°) V Ww Figure 1: R1 = 502, R2 = 1 k12 and RL = 500 2. (a) Calculate the current through R2. [2] (b) Calculate the power dissipated on the load resistance RL. [3] (c) With your own words, briefly explain the concept of RMS power. [2] (d) What should be the voltage of a DC battery which replaces the AC source in Figure 1 whilst dissipating the equivalent to the RMS power over Rį? [3]