A copper wire is wrapped 65 times around an unknown core of length 28cm. The current in the wire is 800mA and the magnetic field due to the electromagnet is 1.63 x 10-2T. What is the most likely material the wire is wrapped around?
Solenoid: The magnetic field strength
Manganese-Zinc Ferrite has a relative permeability of around 640 (according to wikipedia) . So it could be a Manganese-Zinc Ferrite core. Thanks to Miroslav and A08 for correcting me here.
Magnetic Properties of Materials Reference: https://en.wikipedia.org/wiki/Permeability_%28electromagnetism%29