With explanation

following figure shows cross-sections through three long conductors of the same length and material, with square cross-section of edge length as shown. Conductor B will fit snugly with conductor A, and conductor C will fit snugly with conductor B. Relationship betweeen their end to end resistance is

Answers (1)

R=\frac{\rho l}{A}

Given length and material is same, so length and resistivity is same.

area\ of\ cross-section\ of\ A\ =(\sqrt{3}a)^2-(\sqrt{2}a)^2=a^2\\area\ of\ cross-section\ of\ B=(\sqrt{2}a)^2-(a)^2=a^2\\area\ of\ cross-section\ of\ C=a^2

so area are also same. 

R_A=R_B=R_C

 

Most Viewed Questions

Preparation Products

Knockout NEET 2024

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports, Faculty Support.

₹ 29999/- ₹ 24999/-
Buy Now
Knockout NEET 2025

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 45000/-
Buy Now
Knockout NEET (One Month)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports.

₹ 7999/- ₹ 4999/-
Buy Now
Knockout NEET 2023 (One Month)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports.

₹ 13999/- ₹ 6999/-
Buy Now
Knockout NEET (Three Months Subscription)

- AI Coach Study Modules, - Unlimited Mock Tests, - Study Improvement Plan.

₹ 5999/- ₹ 4499/-
Buy Now
Boost your Preparation for NEET 2021 with Personlized Coaching
 
Exams
Articles
Questions