WBJEE · Physics · Magnetic Effects of Current
A long conducting wire carrying a current \(I\) is bent at \(120^{\circ}\) (see figure). The magnetic field \(B\) at a point \(P\) on the right bisector of bending angle at a distance \(d\) from the bend is \(\left(\mu_{0}\right.\) is the permeability of free space) 
- A \(\frac{3 \mu_{0} I}{2 \pi d}\)
- B \(\frac{\mu_{0} I}{2 \pi d}\)
- C \(\frac{\mu_{0} I}{\sqrt{3} n d}\)
- D \(\frac{\sqrt{3} \mu_{0} I}{2 \pi d}\)
Answer & Solution
Correct Answer
(D) \(\frac{\sqrt{3} \mu_{0} I}{2 \pi d}\)
Step-by-step Solution
Detailed explanation
We know that…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- An electron revolves around the nucleus in a circular path with angular momentum \(\overrightarrow{\mathrm{L}} . \mathrm{A}\) uniform magnetic field \(\overrightarrow{\mathrm{B}}\) is applied perpendicular to the plane of its orbit. If the electron experiences a torque \(\overrightarrow{\mathrm{T}}\), thenWBJEE 2022 Medium
- A uniform magnetic field \(B\) exists in a region. An electron of charge \(q\) and mass \(m\) moving with velocity \(v\) enters the region in a direction perpendicular to the magnetic field. Considering Bohr angular momentum quantization, which of the following statement(s) is/are true?WBJEE 2023 Hard
- The line \(A A^{\prime}\) is on charged infinite \(A\) conducting plane which is perpendicular to the plane of the paper. The plane has a surface density of charge \(\sigma\) and \(B\) is ball of mass \(m\) with a like charge of magnitude \(q . B\) is connected by string from a point on the line \(A A^{\prime}\). The tangent of angle (0) formed between the line \(A A^{\prime}\) and the string is
WBJEE 2015 Hard - A satellite has kinetic energy \(K\), potential energy \(V\) and total energy \(E .\) Which of the following statements is true?WBJEE 2015 Easy
- A charged particle in a uniform magnetic field \(B=B_0 \hat{k}\) starts moving from the origin with velocity \(v=3 \hat{i}+4 \hat{k}\) m/s. The trajectory of the particle and the time \(t\) at which it reaches \(2 \mathrm{~m}\) above \(x-y\) plane are,WBJEE 2023 Medium
- A bullet of mass \(4.2 \times 10^{-2} \mathrm{kg},\) moving at a speed of \(300 \mathrm{ms}^{-1}\), gets stuck into a block with a mass 9 times that of the bullet. If the block is free to move without any kind of friction, the heat generated in the process will beWBJEE 2017 Medium
More PYQs from WBJEE
- Cold ferrous sulphate solution on absorptive of NO develops brown colour due to the formation ofWBJEE 2015 Medium
- The tangent at point \((a \cos \theta, b \sin \theta), 0 < \theta < \frac{\pi}{2}\), to the ellipse \(\frac{x^2}{a^2}+\frac{y^2}{b^2}=1\) meets the \(x\)-axis at \(T\) and \(y\)-axis at \(T_1\). Then the value of \(\min _{0 < \theta < \frac{\pi}{2}}(O T)\left(O T_1\right)\) isWBJEE 2023 Medium
- Let \(f(x)=x^{13}+x^{11}+x^{9}+x^{7}+x^{5}\)
\(+x^{3}+x+19 .\) Then, \(f(x)=0\) hasWBJEE 2017 Easy - A \(1 \mu \mathrm{F}\) capacitor \(C\) is connected to a battery of \(10 \mathrm{V}\) through a resistance 1 Mega Ohm. The voltage across \(C\) after 1 s is approximatelyWBJEE 2016 Medium
- Dissolving NaCN in de-ionised water will result in a solution havingWBJEE 2017 Easy
- Two particles move in the same straight line starting at the same moment from the same point in the same direction. The first moves with constant velocity \(u\) and the second starts from rest with constant acceleration \(f\). Then,WBJEE 2017 Medium