Question

Find the equivalent resistance,refer attachment

Answer 1

1. According To figure , If we stretch the wire A and B then , it covert into a rectangular field with three parallel lines
2. Since the equivalent of first line is Re = R1 + R2
3. Re = 10 + 5 = 15 ohm also equivalent resistance of third line be Rs = R4 + R5
4. Rs = 10 + 5 = 15 ohm
5. The Resistance of middle line be R3 = 15 ohm
6. Since these three lines are parallel then total resistance = 1/Rt = 1/Re + 1/Rs +1/R3
7. 1/Rt = 1/15 + 1/15 + 1/15
8. 1/Rt = 3/15
9. 1/Rt = 1/5
10. Rt = 5 ohm
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