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Q. Five resistors each of value m are connected between points A and F as shown in figure. If two similar wires are connected one between points B and D and another between points C and E. The effective resistance between points A and F will be 1. 7m 2. 5m 3. 3m 4. 6m Please answer with explanation
Dear student,When resistors are connected as mentioned, BDEC would form a wheatstone bridge and so CD branch can be neglected. Then resistance of branch BDE and BCE, both becomes 2m. Hence resistance across B and E becomes m. Hence total resistance across A and F becomes 3m.
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