| ⇦ | 
| ⇨ |
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: - A fringe width of a certain interference pattern is β=0.002 cm. What is the distance
- A thin semicircular conducting ring (PQR) of radius r is falling with its plane
- A 70 kg man stands in contact against the inner wall of a hollow cylindrical drum
- A wire is suspended vertically from one of its ends is stretched by attaching a weight
- Alternating current cannot be measured by D.C Ammeter because
Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A fringe width of a certain interference pattern is β=0.002 cm. What is the distance
- A thin semicircular conducting ring (PQR) of radius r is falling with its plane
- A 70 kg man stands in contact against the inner wall of a hollow cylindrical drum
- A wire is suspended vertically from one of its ends is stretched by attaching a weight
- Alternating current cannot be measured by D.C Ammeter because
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