| ⇦ | 
| ⇨ |
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: - Which series of hydrogen spectrum corresponds to ultraviolet region?
- Which one of the following statements is WRONG in the context of X-rays generated
- In a LCR series circuit, the potential difference between the terminals of the inductor
- At a given temperature the root mean square velocities of oxygen and hydrogen
- The identical loops of copper and aluminium are moving with the same speed
Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which series of hydrogen spectrum corresponds to ultraviolet region?
- Which one of the following statements is WRONG in the context of X-rays generated
- In a LCR series circuit, the potential difference between the terminals of the inductor
- At a given temperature the root mean square velocities of oxygen and hydrogen
- The identical loops of copper and aluminium are moving with the same speed
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