1.

A piece of wire of resistance 4 ohms is bent through \[180{}^\circ \] at its mid-point and the two halves are twisted together, then the resistance is                                                                [CPMT 1971]

A.                    8 ohms
B.                                      1 ohm
C.                    2 ohms
D.                                      5 ohms
Answer» C.                    2 ohms


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