| ⇦ | 
| ⇨ |
If emf induced in a coil is 2 V by changing the current in it from 8 A to 6 A in 2×10⁻³ s, then the coefficient of self-induction is
Options
(a) 2×10⁻³ H
(b) 10⁻³ H
(c) 0.5×10⁻³ H
(d) 4×10⁻³H
Correct Answer:
2×10⁻³ H
Explanation:
Induced emf, e = 2 V
i₁ = 8 A, i₂ = 6 A
∆t = 2 × 10⁻³ s
Coefficient of self-induction, L = e / (∆i/∆t)
= -2 / [(6-2) / 2 × 10⁻³]
= (-2 × 2 × 10⁻³) / -2
= 2 × 10⁻³ H
Related Questions: - A shell of mass 200 g is ejected from a gun of mass 4 kg by an explosion
- A boat of anchor is rocked by waves whose crests are 100 m apart and velocity
- The intensity of magnetisation of a bar magnet is 5×10⁴ Am⁻¹. The magnetic length
- The diameter of the eye ball of a normal eye is about 2.5 cm. The power of the eye
- When a bullet of mass 10 g and speed 100 ms⁻¹ penetrates up to distance 1 cm
Topics: Electromagnetic Induction
(76)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A shell of mass 200 g is ejected from a gun of mass 4 kg by an explosion
- A boat of anchor is rocked by waves whose crests are 100 m apart and velocity
- The intensity of magnetisation of a bar magnet is 5×10⁴ Am⁻¹. The magnetic length
- The diameter of the eye ball of a normal eye is about 2.5 cm. The power of the eye
- When a bullet of mass 10 g and speed 100 ms⁻¹ penetrates up to distance 1 cm
Topics: Electromagnetic Induction (76)
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