Question Detail

PHY 102 Test Compilation PHY 102 26 Objective Question
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Question

A wire of resistance 2 Ohm is stretched uniformly to twice its original length. The resistance of the new wire will be:
Options
A 1 Ohm
B 2 Ohm
C 4 Ohm
D 8 Ohm
Correct Answer
Correct Answer

Option D is the correct answer.

Detailed Explanation

Stretching conserves volume; doubling L halves A. R_new=4x(rho L/A)=4x2=8 Ohm.

Hint

Stretching conserves volume; doubling L halves A.

Question Info

Course: PHY 102
Topic: Test Compilation PHY 102 26
Type: Objective
Difficulty: Not specified
Question 1512 of 1819
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