Recent content by sfdevil

can you possibly expand on your answers ? what do you mean I don't have the right expression for the emf ? and what does a solenoid have to do with this problem ? the textbook I use states that the self-induced emf in any closed loop of current is -L*dI/dT... I saw a similar problem...

anyone ? any hints/suggestions ?

Homework Statement A square loop made of wire with negligible resistance is placed on a horizontal frictionless table. The mass of the loop is m and the length of each side is b. a nonuniform vertical magnetic field B=B0(1+kx) exists in the region, where B0 and k are constants. The loo is...

so from that explanation, I got that since inner radius is 3 and outer is 7, then radius of the rectangular cross-section is 4/2=2 so r=3+2=5 thats about as much as I could get from that page, please let me know If I am still missing something...

so basically these numbers don't really matter, right ? since I am finding the magnetic field inside the toroid, its just going to be r as an arbitrary length from the center to some point inside (between 3 and 7 cms) ...correct ? if so, then the final solution is mu_0*850*I/(2*pi*R), right ?

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...