 # Boost Your Understanding of Magnetism Physics with Plainmath

Recent questions in Magnetism zapri4j 2022-09-27

## Hard magnets are materials, in which the process ofa. magnetization is done easily, but demagnetization is difficultb. demagnetization is done easily, but magnetization is difficultc. magnetization and demagnetization is done easilyd. magnetization and demagnetization is difficult Haven Kerr 2022-09-23

## Explain the concept of Ampere’s Law and cite at least two (2) importance Jase Rocha 2022-09-21

## If magnetic monopoles existed, how would the Gauss’s law of magnetism be modified? Orion Cervantes 2022-09-15

## Show that the mass required is given by $m=\frac{{\mu }_{0}L{I}^{2}}{2\pi rg}$ where g is the acceleration due to gravity on the surface of Earth.

ElectromagnetismOpen question Nashorn0o 2022-08-19

## The earth may have even reversed the direction of its field several times during its history of 4 to 5 billion years. How can geologists know about the earth’s field in past?

ElectromagnetismOpen question brasocas6 2022-08-18

## Earth has a magnetic dipole moment of .(a) What current would have to be produced in a single turn of wire extending around Earth at its geomagnetic equator if we wished to set up such a dipole? Could such an arrangement be used to cancel out Earth’s magnetism (b) at points in space wellabove Earth’s surface or (c) on Earth’s surface?

ElectromagnetismOpen question sublimnes9 2022-08-18

## True or false: Ampere's law (with displacement current) is one of Maxwell's Equations:a. Trueb. False, even the names are different

ElectromagnetismOpen question assuolareuz 2022-08-13

## According to Gauss' law for magnetism, the second equation of Maxwell's Equations shown below, magnetic field lines$\oint \stackrel{\to }{E}\cdot \stackrel{\to }{d}\stackrel{\to }{A}=q/ϵ$$\oint \stackrel{\to }{B}\cdot d\stackrel{\to }{A}=0$$\oint \stackrel{\to }{B}\cdot d\stackrel{\to }{A}=0\phantom{\rule{0ex}{0ex}}\oint \stackrel{\to }{E}\cdot d\stackrel{\to }{s}=-d{\mathrm{\Phi }}_{B}/dt\phantom{\rule{0ex}{0ex}}\oint \stackrel{\to }{B}\cdot d\stackrel{\to }{s}={\mu }_{0}i+{\mu }_{0}{ϵ}_{0}d{\mathrm{\Phi }}_{E}/dt$ proximumha 2022-08-12

## What are the effects of height of wire to magnetism traucaderx7 2022-08-08

## How does induced magnetism work with magnetic induction and magnetic domain? Francisco Proctor 2022-07-22

## Description of the steps/processes involved based on electromagnetism in television (any concepts of magnetism) Lilliana Livingston 2022-07-20

## The Maxwell equation derived from Gauss's Law in magnetism isa) $\oint \stackrel{\to }{B}\stackrel{\to }{ds}={\mu }_{0}I+{ϵ}_{0}{\mu }_{0}\frac{d{\mathrm{\Phi }}_{E}}{dt}$b) $\oint \stackrel{\to }{B}\stackrel{\to }{dA}=0$c) $\oint \stackrel{\to }{E}\stackrel{\to }{dA}=\frac{{Q}_{in}}{{ϵ}_{0}}$d) $\oint \stackrel{\to }{E}\stackrel{\to }{ds}=-\frac{d{\mathrm{\Phi }}_{m}}{dt}$ Makena Preston 2022-07-17

## An isolated conducting Sphere of radius R has a charge Q. What is the total stored energy? What is the radius r within which half the stored energy is contained? Ellie Benjamin 2022-07-15

## a) Faradays formulate two basic laws of electromagnetic induction based on Faradays experiments.Explain Faradays experiment and at the end depending on the experiment, state Faradays laws.b) Explain how one can increase the emf induced in the coil by change in magnetic field.c) State Lenz law. Jamison Rios 2022-07-15

## I want to derive Gauss's law for magnetism,$\mathrm{\nabla }\cdot \stackrel{\to }{B}=0\phantom{\rule{thinmathspace}{0ex}}.$The derivation in Griffiths Introduction to elecrodynamics usesbut to use this, I would need $\stackrel{\to }{J}×\frac{\stackrel{\to }{r}}{{r}^{3}}$ and $\mathrm{\nabla }\cdot \left(\stackrel{\to }{J}×\frac{\stackrel{\to }{r}}{{r}^{3}}\right)$ to be continuous.Since $\stackrel{\to }{J}=\rho \stackrel{\to }{v}$ , then if $\rho$ (charge density) has a continuous derivative, I'm done; but, I'm not sure why can I affirm this because clearly, I can construct charge distributions with jump discontinuities. garcialdaria2zky1 2022-05-20

## If the magnitude of the magnetic induction is less than that in a vaccum within a solid, so, this material calleda) Ferrimagneticb) Ferromagneticc) Diamagneticd) Paramagnetic Angelique Horne 2022-05-20

## How many neutral points can be obtained in a given plane perpendicular to the length of the two parallel wires conducting current in the same direction? Explain, Neglect earth's magnetic field of a bar magnet NS Aedan Tyler 2022-05-20

## What is tangent law of magnetism? adocidasiaqxm 2022-05-19 Raphael Mccullough 2022-05-18