Question 11 (15 marks) Consider the circuit shown in Figure Q11(a), a battery Vs = 15V with an internal resistance Rs is

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Question 11 15 Marks Consider The Circuit Shown In Figure Q11 A A Battery Vs 15v With An Internal Resistance Rs Is 1 (77.22 KiB) Viewed 411 times

Question 11 (15 marks) Consider the circuit shown in Figure Q11(a), a battery Vs = 15V with an internal resistance Rs is connected to a load resistance RL. Rs + Is RL Vs VL Figure Q11(a) (a) If a load resistance R₁ = 400 2 is connected, V₁= 10 V is measured. (i) Find the current Is flowing in the circuit. (2 marks) (ii) Determine the value of the internal resistance Rs. (3 marks) (iii) What is the power dissipated in the load resistor R₂? (3 marks) (b) The load resistance R₂ is replaced by a network of resistors R1 = 20 £2, R2 = 30 2 and R3 = 50 2 shown in the Figure Q11(b). (i) Find the equivalent resistance across AB. (4 marks) (ii) Find the voltage VAB across AB. (3 marks)
Vs Figure Q11(b) Rs R2 A B R1 R3 VAB I