Toroid Definition and 68 Threads

The toroid shown in the figure has a wire carrying a current I= 7.10 Amperes wrapped around it N= 820 times. The inner radius is R1 23.0 cm and outer radius R2 27.6cm. Figure: http://capaserv.physics.mun.ca/msuphysicslib/Graphics/Gtype63/prob01_torus.gif What is the magnitude of the...

Hello, I need help with calculating inductance of a toroid core. I tried googling and came up with 3 results, but they don't really help. Links are: http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/indtor.html http://www.nessengr.com/techdata/toroid/toroid.html...

Homework Statement (I have done parts i) through v) correctly. It is the remaining two I'm stuck on. A toroid of rectangular cross-section has a height of 10mm, an inner diameter of 68mm and an outer diameter of 82mm. It is made of iron and is wound with 118 closely-spaced turns. When a...

I want to build a simple induction apparatus like the one displayed at this web page: http://micro.magnet.fsu.edu/electromag/java/faraday/" My first attempt didn't work, and I'm trying to troubleshoot it. I am wondering how much magnetic field degradation there is around the toroid. As the...

1. Homework Statement A toroid of a circular cross section whose center is at the origin and the axis the same as the z-axis has 1000 turns with po=10cm, a=1cm. If the toroid carries a 100mA current, find |H| at (6cm, 9cm, 0). 2. Homework Equations How do I calculate |H| at...

Why is the b field inside a thick toroid largest along inner edge and smallest along outer edge?

I need to obtain a toroid for inductive coupling to medium voltage power lines. The frequencies to be coupled are between 10 kHz and 900 kHz. Bear in mind that at power frequency (50 Hz), the current will be high (up to 100 Amps). Anyone have any idea on a magnetic material that can achieve...

You are going to wrap a toroid with 273 m of copper wire that can carry a current of I = 1.7 A. The toroid has radius R = 16 cm and cross sectional diameter D = 1.2 cm. How large a magnetic field (T) can you make at the average toroidal radius? I have been using the formula B =...

Use ampere's law to determine the magnetic field (a) inside and (b) outside a toroid, which is like a solenoid bent into the shape of a circle. Here is my work.. IS MY WORK CORRECT? a.) B(2PIr)=MoIenc and I found that B=MoNI/2pir b.) the magnetic field is 0 outside the loop

Can't this be calculated from B = mu*N*I/2*pi*r? Book explanation says that this can't be done because there is "no path through the center along which the field is constant" So I guess I must use the Biot-Savart Law. How should I go about doing that?

Inside the toroid, in which direction does the magnetic field point, if the current is going clockwise around the loop? So I tried to consider the fields due to two points on opposite sides of the toroid. Then I got stuck becuase I don't know what direction their fields added up. What do I do?

Homework Statement Use Ampere’s law to calculate the magnetic field inside of a toroid with 850 turns. The inner radius of the rectangular coils is 3.00 cm, the outer radius is 7.00 cm. Homework Equations ampere's law: path integral(B*ds) over a closed path is equal to the enclosed...

Hello, I needed some help with a problem from the Griffiths Book on EM. It's problem number 6.10 if anyone has the book. Here is the problem and I have attached a crude drawing using MSPaint. An iron rod of length L and square cross section (side a), is given a uniform longitudinal...

Calculate the energy stored in a toroidal coil. The magnetic field in a toroid is give by: B = \frac{\mu_0 n I}{2\pi r} Energy stored is given by: W = {1\over 2\mu_0}\int B^2 d\tau W = {1\over 2\mu_0} \frac{\mu_0^2 n^2 I^2}{4\pi^2}\int {1\over r^2}d\tau How do I determine the volume element...

I have a difficult probelm to solve: There is a dougnut shape (toroidal coil) with N turns of wire wrapped around it. Current I flows in the wire. THe cross section of the 'doughnut' is square with height h. I am meant to use ampere's law to prove that the magnetic field at a radius r from...

A toroid having a square cross section, 5.00 cm on a side, and an inner radius of 16.0 cm has 600 turns and carries a current of 0.700 A. (It is made up of a square solenoid bent into a doughnut shape.) (a) What is the magnitude of the magnetic field inside the toroid at the inner radius...

Dear Folks: I have posted this Question all over the web, physics forums, science magazines, academics in plasma physics and condensed matter, I have received little response. Can you be of assistance? I thought this might interest you. I have been researching Hydrogen-boron...

Dear Sirs: I have posted this Question all over the web, physics forums, science magazines, academics in plasma physics and condensed matter, I have received little response. Can you be of assistance? I thought this might interest you. I have been researching Hydrogen-boron Fusion...