AP EAMCET Medical 2017 Shift 1 Paper

Question : 112 of 160

Marks: +1, -0

A bar magnet has coersivity of 6 x 103 Am−1. It is desired to demagnetize it by inserting it inside a solenoid of length 15 cm and having 90 turns. The current that should be sent through the solenoid is____