| ⇦ | 
| ⇨ |
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: - At 0⁰C, 15 gm of ice melts to form water at 0⁰C. The change in entropy is
- Energy of all molecules of a monoatomic gas having a volume V and pressure P is 3PV/2.
- In electromagnetic wave, according to Maxwell, changing electric field gives
- The velocity of electromagnetic radiation in a medium of permittivity ε₀
- Two positive ions, each carrying a charge q, are separated by a distance d
Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- At 0⁰C, 15 gm of ice melts to form water at 0⁰C. The change in entropy is
- Energy of all molecules of a monoatomic gas having a volume V and pressure P is 3PV/2.
- In electromagnetic wave, according to Maxwell, changing electric field gives
- The velocity of electromagnetic radiation in a medium of permittivity ε₀
- Two positive ions, each carrying a charge q, are separated by a distance d
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