Question

Resistive circuit problem, please show clear step. Thank you.

3.Find the equivalent resistance Rab for each of the circuits in Fig. P3.8. Figuro P3. Figure P3.8 6Ω 3Ω 18Ω 3Ω 5Ω 9Ω 2.5Ω 6Ω 5Ω 40Ω 12Ω 45 Ω 5Ω 20 Ω 60Ω 30Ω 2611 75Ω 15 Ω 1Ω 3Ω 10 Ω 3.4 Ω 1.25 Ω 10Ω 15Ω 5.2 Ω

Answer 1

R_1 Vertical-bar Vertical-bar R_2 = R_1 R_2/R_1 + R_2 R_1 R_2 = R_1 + R_2 20 Vertical-bar Vertical-bar 5 = 20 times 5/20 + 5 = 100/15 = 4 ohm 18 Vertical-bar Vertical-bar 4 = 18 times 9/18 + 9 = 6 ohm 6 + 4 + 10 = 20 ohm 20 Vertical-bar Vertical-bar 30 ohm = 20 times 30/20 + 30 = 600/50 = 12 ohm 5 + 12 + 3 = 20 ohm 3 Vertical-bar Vertical-bar 6 = 3 times 6/3 + 6 = 2 ohm 5 + 15 = 30 ohm 20 Vertical-bar Vertical-bar 60 = 20 times 60/20 + 60 = 15 ohm 15 + 10 = 25 ohm 25 Vertical-bar Vertical-bar 75 = 25 times 75/25 + 75 = 18.75 ohm + = 30 ohm 30 Vertical-bar Vertical-bar 20 = 30 times 20/30 + 20 = 12 ohm 2 + 12 = 14 ohm 14 Vertical-bar Vertical-bar 26 = 14 times 26/14 + 26 = 94 ohm 2.5 + 9 + = 15 ohm Given circuit can be drawn as 3 + 5 = 8 ohm 8 Vertical-bar Vertical-bar 12 = 8 times 12/8