Hi i hope you can help me?
My question is:
Given the relationships:
B/h = U, H = IN/l and L = N x dphi/dI {ie, L = N x change in phi/change in I}.
show that the inductance of the coil is:
L = Nsquared/S Where S = l/uA ??
.l is lower case L...
Many thanks for taking the time. I've noted your advice and will take a good look around before i consider any more posts.
Once again thanks for your help (and the welcome).
Cheers
Hi, could anyone please let me know of any books that explain electromagnetic theory.
Unfortunately a lot of books seem to be written for people who already know the subject well.Probably teaching aids i think. I am in s/e/asia but not a problem as i can always look up ebay. any suggestions...
electromagnet problem, need help please!
Q1, I need to calculate the value of B required to lift a plate.
Q2, Estimate the mmf F required to lift the same plate.
I understand P = B squared x A. divided by 2 x permeability of free space.
This is what I have to work with:
The...
Thanks For Your Reply.
I WILL TRY EXPLAIN MY QUESTION AND PRESENT YOU WITH ALL THE FACTS I HAVE AT MY DISPOSAL.
In the question it is first mentioned that the pull,P, exerted at each pole of the magnet is given by the equation:
P = Bsquared x A divided by 2 x permeability of free space.
A...
HI EVEYONE,
NEED TO TAALK TO SOMEONE WHO IS UP ON CALCULATING THE VALUE OF (B), REQUIRED TO LIFT A PLATE OF XXNEWTONS. ALSO ESTIMATE THE M.M.F REQUIREDTO LIFT THE SAME PLATE.
ANY TAKERS PLEASE?
THANKS