Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  • If a long hollow copper pipe carries a current, then magnetic field is producedOption: 1 inside the pipe only<s

If a long hollow copper pipe carries a current, then magnetic field is produced

Option: 1

inside the pipe only


Option: 2

outside the pipe only


Option: 3

both inside and outside the pipe


Option: 4

no where


Answers (1)

best_answer

Inside a hollow pipe carrying current, the magnetic field is zero, since according to Ampere's law, \mathrm{B_{\mathrm{i}} .2 \pi \mathrm{r}=\mu_0 \times 0 \Rightarrow B_{\mathrm{i}}=0}
But for external points, the current behaves as if it was concentrated at the axis only; so, outside,  \mathrm{B_0=\frac{\mu_0 i}{2 \pi r}}.

Posted by

Deependra Verma

View full answer

NEET 2024 Most scoring concepts

    Just Study 32% of the NEET syllabus and Score up to 100% marks

Similar Questions

Trending Articles/News

anam-khan

Karnataka: NEET candidate dies by suicide; no note recovered
anam-khan

CBSE Re-evaluation Row: Dharmendra Pradhan seeks detailed report on technical failures
anam-khan

Before NEET, CMC Vellore’s unique MBBS admissions tested aptitude along with merit; paper-leak restarts debate

Latest Question