| ⇦ | 
| ⇨ |
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: - Two bodies of masses m and 4 m are moving with equal K.E. The ratio of their linear
- The average power dissipated in AC circuit is 2 W. If a current flowing through
- Two thin lenses of focal lengths f₁ and f₂ are in contact and coaxial.
- The half-life of radioactive element is 600 yr. The fraction of sample
- Hydrogen atom in ground state is excited by a monochrmatic radiation of λ=975 Å
Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two bodies of masses m and 4 m are moving with equal K.E. The ratio of their linear
- The average power dissipated in AC circuit is 2 W. If a current flowing through
- Two thin lenses of focal lengths f₁ and f₂ are in contact and coaxial.
- The half-life of radioactive element is 600 yr. The fraction of sample
- Hydrogen atom in ground state is excited by a monochrmatic radiation of λ=975 Å
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