| ⇦ | 
| ⇨ |
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: - An ideal spring with spring constant K is hung from the ceiling and a block of mass
- A body has 80 microcoulomb of charge. Number of additional electrons in it will be
- The amount of heat energy required to raise the temperature of 1 g of Helium
- If the number of radius of ²⁷Al is 3.6 Fermi, the approximate nuclear radius
- The weight of a body on surface of earth is 12.6 N. When it is raised to a height
Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- An ideal spring with spring constant K is hung from the ceiling and a block of mass
- A body has 80 microcoulomb of charge. Number of additional electrons in it will be
- The amount of heat energy required to raise the temperature of 1 g of Helium
- If the number of radius of ²⁷Al is 3.6 Fermi, the approximate nuclear radius
- The weight of a body on surface of earth is 12.6 N. When it is raised to a height
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