Question

17. Two conducting wires of the same material and of equal lengths and equal diameters are first connected in series and then parallel in a circuit. The ratio of equivalent resistance in series and parallel combinations would be: (A) 1:2 (B) 2:1 (C)1:4 (D) 4:1 ​

Answer 1

1:4

Since the two wires have same material, length and diameter, they have the same resistance. Let the resistance of each wire be R.

Let applied potential difference be V