Physics, asked by Brainstorm5683, 11 months ago

How does the resistance of a wire change when its length is tripled second radius is tripled third material is changed to one whose resistivity is three times?

Answers

Answered by om2006
2

Answer:

  1. Increase by thrice
  2. Decreases by 9 times
  3. Increase by 3 times

Explanation:

We know that resistance=resistivity*length/area

  • When length is tripled then resistance increases to 3times
  • When radius is tripled then resistance decreases by a factor of 9.
  • When the resistivity is tripled then the resistance increases by 3 times
  • When all these changes are simulatneous then the resistance remains the same.

Hope you find helpful . please thanks

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