| ⇦ | 
| ⇨ |
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.
Related Questions: - The decay constant of a radio isotope is λ. If A₁ and A₂ are its activities at time
- When we close one slit in the young’s double slit experiment, then
- A particle of mass m moves with constant speed along a circular path of radius r under
- Two small spherical shells A and B are given positive charges of 9C and 4C
- Two coaxial solenoids are made by winding thin insulated wire over a pipe
Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The decay constant of a radio isotope is λ. If A₁ and A₂ are its activities at time
- When we close one slit in the young’s double slit experiment, then
- A particle of mass m moves with constant speed along a circular path of radius r under
- Two small spherical shells A and B are given positive charges of 9C and 4C
- Two coaxial solenoids are made by winding thin insulated wire over a pipe
Topics: Magnetic Effects of Current and Magnetism (167)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply