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. A body of length 1 m having cross-sectional area 0.75 m² has heat flow through it
  2. Before using the tangent galvanometer, its coil is set in
  3. A uniform wire of resistance 9Ω is joined end-to-end to form a circle. Then
  4. Application of a forward bias to a P-N junction
  5. Two identical charges repel each other with a force equal to 10 mgwt they are 0.6 m