⇦ | ⇨ |
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 fringe width of a certain interference pattern is β=0.002 cm. What is the distance
- The drift velocity of free electrons in a conductor is v, when a current
- The electric and magnetic field assiciated with an E.M. wave
- If X=3YZ², find dimensions of Y if X and Z are the dimensions of capacity
- The Bohr model of atoms
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
- The drift velocity of free electrons in a conductor is v, when a current
- The electric and magnetic field assiciated with an E.M. wave
- If X=3YZ², find dimensions of Y if X and Z are the dimensions of capacity
- The Bohr model of atoms
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