Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  • The magnetic induction at point P which is 4cm distant from a long current-carrying wire is <img alt="10^{-3} \mathrm{~T}" src="https://entrancecorner.oncodecogs.com/gif.latex?10%5E%

The magnetic induction at point P which is 4cm distant from a long current-carrying wire is 10^{-3} \mathrm{~T} . The field of induction at a distance of 12cm from the same current would be

Option: 1

3.33 \times 10^{-4} \mathrm{~T}


Option: 2

1.11 \times 10^{-4} \mathrm{~T}


Option: 3

3 \times 10^{-2} \mathrm{~T}


Option: 4

9 \times 10^{-2} \mathrm{~T}


Answers (1)

best_answer

B=\frac{\mu_0 I}{2 \pi r} \Rightarrow \beta \alpha \frac{1}{r}

As the distance is increased to three times, the magnetic induction reduces to one-third.
Hence,
\begin{aligned} & B=\frac{1}{3} \times 10^{-3} \mathrm{~T} \\ & =3.33 \times 10^{-4} \mathrm{~T} \end{aligned}

Posted by

admin

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

NEET Paper Leak: Court extends CBI custody of accused Manisha Hawaldar by 2 days
anam-khan

'PM Modi personally supervising the situation': Centre tells SC in NEET case
anam-khan

NEET Paper Leak Row: NTA informs SC of security overhaul, institutional reforms

Latest Question