| ⇦ | 
| ⇨ |
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: - In which case positive work has to be done in seperating them?
- A block slides from an inclination of 45°.If it takes time twice
- If vₑ is escape velocity and vₙ is orbital velocity of a satellite
- A beaker of radius 1.5 cm is filled with a liquid of surface tension 0.075 N/m
- An LED is constructed from a p-n junction based on a certain semi-conducting
Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In which case positive work has to be done in seperating them?
- A block slides from an inclination of 45°.If it takes time twice
- If vₑ is escape velocity and vₙ is orbital velocity of a satellite
- A beaker of radius 1.5 cm is filled with a liquid of surface tension 0.075 N/m
- An LED is constructed from a p-n junction based on a certain semi-conducting
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