A very long wire ABDMNDC is shown in the figu | vedclass

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

Question

(B) The total magnetic field $B$ at the center is the vector sum of the fields produced by the three parts: the straight wire $AB$,the circular loop $

Vedclass · Accepted Answer

$\frac{\mu_{0} I}{2 \pi R}(\pi+1)$

Vedclass · Answer

(B) The total magnetic field $B$ at the center is the vector sum of the fields produced by the three parts: the straight wire $AB$,the circular loop $DMND$,and the straight wire $BC$.$1$. The magnetic field due to the straight wire $AB$ at the center of the circle (which is at a perpendicular distance $R$ from the line of $AB$): $B_{AB} = \frac{\mu_{0} I}{4 \pi R} (\sin 90^{\circ} + \sin 0^{\circ}) = \frac{\mu_{0} I}{4 \pi R}$.$2$. The magnetic field due to the circular loop $DMND$ at its center: $B_{loop} = \frac{\mu_{0} I}{2 R}$.$3$. The magnetic field due to the straight wire $BC$ at the center of the circle (which is at a perpendicular distance $R$ from the line of $BC$): $B_{BC} = \frac{\mu_{0} I}{4 \pi R} (\sin 90^{\circ} + \sin 0^{\circ}) = \frac{\mu_{0} I}{4 \pi R}$.Since the current flows in the same sense for all parts,the magnetic fields add up:$B = B_{AB} + B_{loop} + B_{BC} = \frac{\mu_{0} I}{4 \pi R} + \frac{\mu_{0} I}{2 R} + \frac{\mu_{0} I}{4 \pi R}$$B = \frac{\mu_{0} I}{2 \pi R} + \frac{\mu_{0} I}{2 R} = \frac{\mu_{0} I}{2 \pi R} (1 + \pi)$.

Similar Questions

Two infinitely long wires each carrying current $I$ along the same direction are made into the geometry as shown in the figure below. The magnetic field at the point $P$ is

Which of the following is not a unit of magnetic induction?

The dimensional formula of $\frac{1}{2} \mu_0 H^2$ (where $\mu_0$ is the permeability of free space and $H$ is the magnetic field intensity) is:

The dimensions of $\left(\frac{B^{2}}{\mu_{0}}\right)$ will be. (where $\mu_{0}$ is the permeability of free space and $B$ is the magnetic field)

Vedclass Test Series

Exam Paper Generator

Online Exam Module