A 2.20 mH toroidal solenoid has an average radius of 7.00 cm and a cross-sectional area of 2.80 cm2 . You may want to review (Pages 994 - 997) . For related problem solving tips and strategies, you may want to view a Video Tutor Solution of Calculating self-inductance.
A. How many coils does it have? In calculating the flux, assume that B is uniform across a cross section, neglect the varation of B with a distance from the toroidal axis. B. At what rate must the current through it change so that a potential difference of 2.80 V is developed across its ends?enter the magnitude of the rate.