⇦ | ⇨ |
If r be the distance of a point on the axis of a magnetic dipole from its centre then the magnetic field at such a point is proportional to
Options
(a) 1/r
(b) 1/r²
(c) 1/r³
(d) none of these
Correct Answer:
1/r³
Explanation:
As we know that, the magnetic field at a point due to the dipole is given by B = (μ₀ / 4π) × (M / r³) × √(1 + 3 cos² θ) where, M is magnetic dipole moment. Then, B ∝ 1 / r³
Related Questions: - The power factor of an AC circuit having resistance R and inductance L connected
- The alternating current in a circuit is given by I=50 sin314t. The peak value
- Wires A and B are made from the same material. A has twice the diameter and three times
- To what temperature should the hydrogen at room temperature (27°C) be heated at constant
- In a primary coil 5 A current is flowing on 220 V. In the secondary coil 2200 V
Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The power factor of an AC circuit having resistance R and inductance L connected
- The alternating current in a circuit is given by I=50 sin314t. The peak value
- Wires A and B are made from the same material. A has twice the diameter and three times
- To what temperature should the hydrogen at room temperature (27°C) be heated at constant
- In a primary coil 5 A current is flowing on 220 V. In the secondary coil 2200 V
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