| ⇦ | 
| ⇨ |
The effective length of magnet is 31.4 cm and its pole strength is 0.8Am. The magnetic moment, if it is bent in the form of a semicircle is …….. A-m²
Options
(a) 1.2
(b) 1.6
(c) 0.16
(d) 0.12
Correct Answer:
0.16
Explanation:
The effective length of magnet = 31.4 cm
Pole strength, m = 0.8 Am
Length of semi-circle = π (D / 2) = l
where, D = diameter of circle
D = 2l / π = (2 × 31.4 × 10²) / 3.14 = 20 × 10⁻² m
Now, the magnetic moment = ml = mD = 0.8 × 20 × 10⁻² m
= 16 × 10⁻² = 0.16 A-m²
Related Questions: - A linear aperture whose width is 0.02 cm is placed immediately in front of a lens
- There is a ring of radius r having linear charge densityλ and rotating with a uniform
- A stone of mass 1 kg tied to a light inexensible string of length L=10/3 is whirling
- A small block of super dense material has mass 3 x 10²⁴ kg.It is situated at a height
- 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
- A linear aperture whose width is 0.02 cm is placed immediately in front of a lens
- There is a ring of radius r having linear charge densityλ and rotating with a uniform
- A stone of mass 1 kg tied to a light inexensible string of length L=10/3 is whirling
- A small block of super dense material has mass 3 x 10²⁴ kg.It is situated at a height
- 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