1.

The following four wires are made of the same material and are at the same temperature. Which one of them has highest electrical resistance                                   [UPSEAT 2004]

A.            Length = 50 cm, diameter = 0.5 mm
B.            Length = 100 cm, diameter = 1 mm
C.            Length = 200 cm, diameter = 2 mm
D.            Length = 300 cm, diameter = 3 mm
Answer» B.            Length = 100 cm, diameter = 1 mm


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