Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • Two cylindrical rods of uniform cross-sectional area and 2, having free electrons per unit volume 2 and , respectively, are joined in series. A current flows through them in steady state. Then the

Two cylindrical rods of uniform cross-sectional area and 2, having free electrons per unit volume 2 and , respectively, are joined in series. A current flows through them in steady state. Then the ratio of drift velocity o free electron in left rod to drift velocity of electron in the right rod (1/) is

Option: 1

\frac{1}{2}


Option: 2

1


Option: 3

2


Option: 4

4


Answers (1)

best_answer

Since current IneAv \mathrm{v_d} through both the rods is the same,

\begin{aligned} & \text { i.e. } \mathrm{2(n) e A v_L=n e(2 A) v_R }\\ & \Rightarrow \mathrm{\frac{v_L}{v_R}=1} \end{aligned}

Posted by

Sanket Gandhi

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

JEE Mains 2025 session 1 registration deadline on November 22; apply on jeemain.nta.nic.in
anam-khan

BTech Admission 2025 Live: JEE Mains, SRMJEEE, MET registrations underway; MHT CET syllabus updates
anam-khan

Centre issues coaching guidelines, prohibits centres from using false claims like '100% selection'

Latest Question