Navigate

A bar magnet has a coercivity of 4×10³ Am⁻¹. It is placed inside a solenoid

A bar magnet has a coercivity of 4×10³ Am⁻¹. It is placed inside a solenoid of length 12 cm having 60 turns in order to demagnetise it. The amount of current that should be passed through the solenoid is

Options

(a) 16A
(b) 8A
(c) 4A
(d) 2A

Correct Answer:

8A

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

EAMCET2015
admin:

Related Questions

  1. The condition for obtaining secondary maxima in the diffraction pattern
  2. Two solid discs of radii r and 2r roll from the top of an inclined plane
  3. If ∆Q>0 when heat flows into a system, ∆W>0 when work is done on the system
  4. A charged particle experiences magnetic force in the presence of magnetic field.
  5. Under the action of a force F=cx, the position of a body changes from 0 to x.The work done