A network of five resistors is connected between terminals A and D as described below:
• Starting at A, resistor R1 = 2 Ω leads to junction B.
• From B, two equal resistors R2 = 4 Ω and R3 = 4 Ω run in parallel and meet again at junction C.
• From C, resistor R4 = 6 Ω extends to terminal D.
• A resistor R5 = 3 Ω is connected directly between junction B and terminal D.
Answer the following:
(i) Reduce the network step-by-step to obtain the equivalent resistance between A and D. Show the intermediate values at every stage of reduction.
(ii) If a 18 V battery is connected across A and D, calculate the total current supplied by the battery.
(iii) For the same applied voltage, compute the power dissipated in resistor R5.