What is the convention for an electric or magnetic field emerging out of the plane of the paper and going into the plane of the paper?
(N/A) The convention used to represent vectors perpendicular to the plane of the paper is as follows:
$1$. $A$ field or current emerging out of the plane of the paper is represented by a dot symbol $\odot$.
$2$. $A$ field or current going into the plane of the paper is represented by a cross symbol $\otimes$.
Note: This convention is based on the visualization of an arrow. $A$ dot $\odot$ represents the tip of an arrow coming towards the observer,while a cross $\otimes$ represents the feathered tail of an arrow moving away from the observer.
$1$. $A$ field or current emerging out of the plane of the paper is represented by a dot symbol $\odot$.
$2$. $A$ field or current going into the plane of the paper is represented by a cross symbol $\otimes$.
Note: This convention is based on the visualization of an arrow. $A$ dot $\odot$ represents the tip of an arrow coming towards the observer,while a cross $\otimes$ represents the feathered tail of an arrow moving away from the observer.
Explore More
Similar Questions
The Biot-Savart law for a moving point charge $q$ with velocity $\vec{v}$ is given by $\vec{B} = \frac{\mu_0}{4\pi} \frac{q(\vec{v} \times \vec{r})}{r^3}$. This indicates that the magnetic field $\vec{B}$ produced by an electron moving with velocity $\vec{v}$ is such that:
MediumKCET 2026
View SolutionTwo concentric circular coils of $10$ turns each are situated in the same plane. Their radii are $20 \, cm$ and $40 \, cm$ and they carry respectively $0.2 \, A$ and $0.3 \, A$ current in opposite directions. The magnetic field at the centre is $(\mu_0 = 4 \pi \times 10^{-7} \, T \cdot m/A)$
DifficultMHT CET 2023
View SolutionThe magnetic induction at point $O$ for the current-carrying wire shown in the figure is:
Two identical long parallel wires carry currents $I_1$ and $I_2$ such that $I_1 > I_2$. When the currents are in the same direction,the magnetic field at a point midway between the wires is $8 \times 10^{-6} \ T$. If the direction of $I_2$ is reversed,the field becomes $3.2 \times 10^{-5} \ T$. The ratio of $I_2$ to $I_1$ is
Equal current $i$ is flowing in three infinitely long wires along positive $x, y$ and $z$ directions. The magnetic field at a point $(0, 0, -a)$ would be:
Medium
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo