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Answer : 5/6 ohms
Explanation:
the wire above the 1 ohm resistor is in series
Rpq = 7 + 3 ohms
Rpq = 10ohms
the wire below is also in series
Rpq = 6 + 4
Rpq = 10ohms
Resistance between pq is in parallel
1/Rpq= 1/10 + 1 + 1/10
1/Rpq = 1/10 + 10/10 + 1/10
1/Rpq = 12/10
1/Rpq = 6/5
Rpq = 5/6 ohms
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