Question:
Masses of three copper wires are in the ratio 1:3:5 and their lengths are in the ratio 5:3:1. Then the ratio of their electric resistances is
Masses of three copper wires are in the ratio 1:3:5 and their lengths are in the ratio 5:3:1. Then the ratio of their electric resistances is
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The resistance of a wire is proportional to its length and inversely proportional to its cross-sectional area. The area is related to the mass and length of the wire.
Updated On: Mar 6, 2025
- \( 125 : 15 : 1 \)
- \( 5 : 3 : 1 \)
- \( 1 : 25 : 125 \)
- \( 1 : 3 : 5 \)
- \( 5 : 21 : 25 \)
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