| ⇦ | 
| ⇨ |
A disc of radius 0.1 m is rotating with a frequency 10 rev/sec in a normal magnetic field of strength 0.1 tesla. Net induced emf is
Options
(a) 2 π x 10⁻² V
(b) 4 π x 10⁻² V
(c) π x 10⁻² V
(d) 3 π x 10⁻² V
Correct Answer:
π x 10⁻² V
Explanation:
Induced emf = Baʋ
= 0.1 × π (0.1)² × 10
= 0.1 × 0.1π × 10
= π × 10⁻³ × 10
= π × 10⁻² V
Related Questions: - Three fourth of the active material decays in a radioactive sample in 3/4 sec
- An object is placed at a distance of 10 cm from a co-axial combination of two lenses
- Dimensions of resistance in an electrical circuit, in terms of dimension of mass M,
- If a mass of 20g having charge 3.0 mC moving with velocity 20ms⁻¹ enters a region
- Which pair is isotonic?
Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Three fourth of the active material decays in a radioactive sample in 3/4 sec
- An object is placed at a distance of 10 cm from a co-axial combination of two lenses
- Dimensions of resistance in an electrical circuit, in terms of dimension of mass M,
- If a mass of 20g having charge 3.0 mC moving with velocity 20ms⁻¹ enters a region
- Which pair is isotonic?
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