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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
45,886 
Hi,
Question:
we have a magnetization M_x that varying as M_x(t)=M_x e^{t}.Threre is a coil on the x axe. The...

Apr1112 03:50 AM
DrDu

26 
2,082 
I've just got confused about how the induced current in a metallic ring is calculated.
Consider a metallic ring...

Dec1412 06:00 PM
Enthalpy

2 
516 
Hi there,
When you have a loop of wire and you move a bar magnet through it, you induce a current in the wire.
...

Jan2211 03:36 PM
tinytim

1 
1,014 
Hi all, I am having a hard time understanding the following scenario (I'm quoting from page 305 of the "Electricity &...

Feb2308 07:24 PM
david20

5 
10,706 
Hi,
I'm a bit confused by induced drag on an aerofoil and hoping somebody can clear it up for me.
I understand...

Mar913 02:39 PM
rcgldr

3 
617 
Imagine a solenoid with n turns per length. Now, for an instant, in which everything looks static, the magnetic field...

May3007 04:51 PM
Meir Achuz

7 
2,671 
If I have a B field in between two current carrying sheets and I approach this moving at a constant speed. And I have...

Apr2911 03:48 PM
cragar

4 
632 
I am a high school student, so forgive me if my question appears stupid.
Consider a uniform magnetic field normal...

Apr510 02:40 AM
Phrak

42 
5,217 
Can electric field be induced at a point near a time varying uniform magnetic field? "Near" means not the in the place...

Dec2012 09:35 AM
dev70

14 
1,713 
I've just seen induced electric field concepts. Could anyone provide a link, which explains it?
I had some rather...

Sep2409 04:19 PM
Bob S

1 
2,086 
suppose there is a region S through which the magnetic field changes with time then is the electric field induced...

Nov1707 12:21 PM
Crosson

7 
1,565 
Hi all,
I am looking into induced electric fields by changing B fields inside layers of dielectric. For example, if...

Jul814 05:13 AM
vanhees71

10 
1,031 
well iwas going through the standard example that is there is a uniform magnetic field in aregion going into the palne...

Aug2707 07:09 PM
Paulanddiw

59 
7,506 
A circular loop of wire has a changing magnetic field running through it...however, the magnetic field is not touching...

May1808 01:53 AM
Dozent100

25 
3,607 
Suppose now i have connected a solenoid with a dc power supply of 10V
When i increase the voltage to 20V the magnetic...

Dec1810 03:05 AM
whitegheghe10

0 
570 
I know the equation for emf: dflux/dt= dB/dt*A . In my case everything is constant accept the magnetic field and I...

Apr2411 07:14 PM
laxmaster08

28 
2,415 
Faraday's law says that an induced voltage across a conductor is directly proportional to the rate of change of...

Jan3111 11:50 AM
cabraham

2 
3,871 
ok, if i have a rectangular loop parallel to the screen and in a uniform constant magnetic field pointing...

Mar2510 05:11 AM
quietrain

7 
1,775 
Hello,
While considering Faraday's Law of Induction, I tried to think of a situation which would expose some...

Jan2212 03:26 PM
Philip Wood

8 
1,967 
Hi everyone,
This question is bothering me for days and would hope to receive some help in this forum. This...

Jul2811 08:30 AM
Philip Wood

21 
5,916 
I am having some trouble understanding why and how the emf changes when a bar magnet is dropped into a solenoid.
As...

Sep2612 05:06 AM
Philip Wood

5 
1,435 
According to "Introduction to Electrodynamics"  Griffiths
I have a few questions about the bolded section
...

Jan2410 05:33 PM
Identity

0 
647 
Hello,
Say I have two concentric conducting rings, where r1 >> r2 (why is this important, btw?),
and I run a time...

Oct1811 03:45 PM
dudy

4 
905 
Excuse me, can anyone teach me how to calculate the induced magnetic moment of steel, given the applied magnetic field?

Jan1906 11:16 AM
Gokul43201

5 
3,627 
My classmates had an argument.
There are 2 trolleys; one of them (A) is attached to a solenoid wrapped around a...

Jun1411 02:16 PM
BruceW

9 
1,788 
Hello.
Say I have a single turn of a coil in an external magnetic field. How do I calculate the voltage induced in...

Nov2012 06:55 AM
Enthalpy

5 
1,042 
I have recently found a circuit schematic that can pick up radio signals without the need of a battery.
Is this an...

May3011 07:14 AM
mavc

15 
2,776 
Hello. I'm am studying topics related to inductances and Faraday's law and I'm having hard time at PICTURING...

Oct2011 04:02 PM
BrunoIdeas

3 
1,702 
what is the value of e.m.f acting upon charged point particle situated at the centre of a circular coil carrying a...

Mar1111 02:52 AM
cragar

1 
867 
I am interested in creating an electric circuit that travels through a polyurethane surface. My plan is to set up two...

Jul1012 03:29 PM
Naty1

3 
621 
I just have some confusion about whether or not selfinductance will occur in an AC generator.
The current is...

Jun1409 10:12 PM
Yuqing

0 
1,324 
I want to create a simple circuit consisting of a power source and an inductor.
I have a simple circuit consisting...

Jul2412 06:36 PM
256bits

2 
716 
Hi everyone,
I encountered a problem as a part of the solution of which I needed to get the iV relation across a...

Nov2712 06:13 AM
Gordianus

5 
1,588 
Dear all,
I am trying to calculate the inductance increase of a small ferrite rod placed in the middle of a...

Nov2513 09:27 AM
paujuan

0 
408 
According to widely known formulas, the inductance of a long straight solenoid will remain practically the same if we...

Jul3110 02:16 PM
htg

2 
1,985 
I've got the probem with determination the formula of inductance in the toroidal coil.
This coil has a shape of...

May2510 07:35 PM
borsuk

0 
1,063 
I posted this question a few months ago, but got no responses, especially after it got moved to the homework help...

Jul1610 10:15 AM
DaTario

2 
970 
suppose a rod of mass m and resistance R,is going down the inclined surface in the uniform magnetic field( see...

Mar3111 02:47 PM
zorro

5 
694 
Lets say you have a plastic plate with little charged balls around the edge. in the middle there's a coil with a...

Dec2006 01:02 PM
jtbell

7 
2,552 
I read interesting article regarding Halbach arrays and magnetic levitation (see www.lmco.cn/data/assets/9197.pdf). In...

Aug1310 07:01 AM
cragar

1 
1,571 