# Solution: What will its resistance be if it is uniformly stretched so that its length becomes 12 m?

The resistance of a wire varies directly with its length and inversely with its area. If a certain piece of wire 10 m long and 0.10 cm in diameter has a resistance of 100 ohms, what will its resistance be if it is uniformly stretched so that its length becomes 12 m?

#### Problem Statement: ECE Board April 1990

The resistance of a wire varies directly with its length and inversely with its area. If a certain piece of wire 10 m long and 0.10 cm in diameter has a resistance of 100 ohms, what will its resistance be if it is uniformly stretched so that its length becomes 12 m?

The resistance of the wire will become 144 ohms.

Solution:

### Latest Problem Solving in Clock, Variation, Progression and Miscelaneous Problems

More Questions in: Clock, Variation, Progression and Miscelaneous Problems

#### Search! Type it and Hit Enter

 Accepting Contribution for Website Operation. Thanks! Option 1 : \$5 USD Option 2 : \$10 USD Option 3 : \$15 USD Option 4 : \$20 USD Option 5 : \$25 USD Option 6 : \$50 USD Option 7 : \$100 USD Option 8 : Other Amount