An insulated copper wire is wrapped around an iron nail. The resulting coil of wire consists of 240 turns of wire that cover 1.8 cm of the nail, as shown in the figure . A current of 0.61 A passes through the wire.
if the ferromagnetic properties of the nail increase the field by a factor of 120, what is the magnetic field strength inside the nail?
Express answer in T
iv been trying for soo long but i have no idea , its a hmk question can someone explain to me , i have a test tomm
physics - bobpursley, Thursday, March 22, 2012 at 6:03pm
physics - Isaac, Thursday, March 22, 2012 at 6:11pm
so n = 240 and i is 0,61??
and would the radius be 0.018/2??
physics - Jeremy, Sunday, March 9, 2014 at 8:25pm
Multiply B times an increase of 120