Toroid Definition and 61 Threads

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...