Neet Solved Paper 2013 Question 25

Question: A wire of resistance $ 4,\Omega $ is stretched to twice its original length. The resistance of stretched wire would be

Options:

A) $ 2,\Omega $

B) $ 4,\Omega $

C) $ 8,\Omega $

D) $ 16,\Omega $

Show Answer

Answer:

Correct Answer: D

Solution:

  • As $ R’=n^{2}R=2^{2}\times 4=4\times 4=16,\Omega $