Current is flowing through a conducting hollo | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) According to Ampere's Circuital Law,the magnetic field $B$ at a point is given by $\oint B \cdot dl = \mu_0 I_{enclosed}$.$1$. At point $P$,which

Vedclass · Accepted Answer

$P$ but not at $Q$ and $R$

Vedclass · Answer

(D) According to Ampere's Circuital Law,the magnetic field $B$ at a point is given by $\oint B \cdot dl = \mu_0 I_{enclosed}$.$1$. At point $P$,which is inside the hollow cavity of the pipe,the enclosed current $I_{enclosed} = 0$. Therefore,the magnetic field $B = 0$.$2$. At point $Q$,which is inside the material of the conducting pipe,the enclosed current $I_{enclosed}$ is non-zero because some current flows through the cross-sectional area inside the Amperian loop passing through $Q$. Therefore,$B 
eq 0$.$3$. At point $R$,which is outside the pipe,the total current enclosed by an Amperian loop passing through $R$ is the total current $I$ flowing through the pipe. Since the current is non-zero,the magnetic field $B 
eq 0$.Thus,the magnetic induction is zero only at point $P$.

Current is flowing through a conducting hollow pipe whose cross-section is shown in the figure. The value of magnetic induction will be zero at

Similar Questions

Which of the following is not an antibiotic?

One of the major components of the cell wall of most fungi is

If the pair of straight lines given by $A x^2+2 H x y+B y^2=0$,where $(H^2 > A B)$,forms an equilateral triangle with the line $a x+b y+c=0$,then $(A+3 B)(3 A+B)=$ (in $H^2$)

$A$ coil of radius '$r$' is placed on another coil (whose radius is '$R$' and current through it is changing) so that their centers coincide. $(R \gg r)$. If both are coplanar,then the mutual inductance between them is proportional to

Vedclass Test Series

Exam Paper Generator

Online Exam Module