Question Detail

PHY 102 Test Compilation PHY 102 3 Objective Question
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Question

Ratio of resistivity of two wires: same length, same resistance, areas 2 m² and 5 m².
Options
A 5:7
B 2:7
C 2:5
Correct Answer
D 7:5
Correct Answer

Option C is the correct answer.

Detailed Explanation

R = ρL/A. Same R, L → ρ ∝ A. ρ₁/ρ₂ = A₁/A₂ = 2/5.

Hint

ρ ∝ A for constant R and L.

Question Info

Course: PHY 102
Topic: Test Compilation PHY 102 3
Type: Objective
Difficulty: Not specified
Question 321 of 1819
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