Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
tvvv1012
Group Title
A 3.00 toroidal mH solenoid has an average radius of 5.60 cm and a crosssectional area of 2.40 cm^2.
How many coils does it have? In calculating the flux, assume that B is uniform across a cross section, neglect the variation of B with distance from the toroidal axis.
At what rate must the current through it change so that a potential difference of 2.60 V is developed across its ends?
 2 years ago
 2 years ago
tvvv1012 Group Title
A 3.00 toroidal mH solenoid has an average radius of 5.60 cm and a crosssectional area of 2.40 cm^2. How many coils does it have? In calculating the flux, assume that B is uniform across a cross section, neglect the variation of B with distance from the toroidal axis. At what rate must the current through it change so that a potential difference of 2.60 V is developed across its ends?
 2 years ago
 2 years ago

This Question is Closed

85295james Group TitleBest ResponseYou've already chosen the best response.0
WOW you got me on this one
 2 years ago

vf321 Group TitleBest ResponseYou've already chosen the best response.1
\[\epsilon = L \frac{di}{dt}\]\[\epsilon=N\frac{d\Phi_B}{dt}=N\pi r^2 B\] You're given the emf, L, and r. You can already find di/dt. All you need to find N is to use Ampere's Law to find B, with C being the circle with the toroid's average radius. \[\int_C \vec B.d\vec l=\mu_0 i_{enc}\]Hint: Visualize the torus and what part of it is going through the circle in order to get ienc.
 2 years ago

tvvv1012 Group TitleBest ResponseYou've already chosen the best response.1
i have 8 mins and i dont think i can do that in time lol
 2 years ago

vf321 Group TitleBest ResponseYou've already chosen the best response.1
I did basically all of it!
 2 years ago

vf321 Group TitleBest ResponseYou've already chosen the best response.1
First equation: solve for di/dt. Second equation: Find B using Ampere's Law with C being the path along the center of the circle cross sections of the torus, then solve for N.
 2 years ago

tvvv1012 Group TitleBest ResponseYou've already chosen the best response.1
i tried pluging in and solving and i got the wrong answer 5mins!
 2 years ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.