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The magnetic susceptibility of a material of a rod is 299. Permeability of vacuum μ₀ is 4πx10⁻⁷ Hm⁻¹. Absolute permeability of the material of the rod is
Options
(a) 3771×10⁻⁷ Hm⁻¹
(b) 3771×10⁻⁵ Hm⁻¹
(c) 3771×10⁻⁶ Hm⁻¹
(d) 3771×10⁻⁸ Hm⁻¹
Correct Answer:
3771×10⁻⁷ Hm⁻¹
Explanation:
Then given, χ(m) = 299, μ₀ = 4π × 10⁻⁷ Hm, and μ = ?
We know that, μ = μ₀ [1 + χ(m)]
μ = 4π × 10⁻⁷ (1 + 299) = 4 × (22/7) × 10⁻⁷ × 300
= [2.6400 / 7] × 10⁻⁷
= 3771.4 × 10⁻⁷ Hm⁻¹ (or),
≃ 3771 × 10⁻⁷ Hm⁻¹
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Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- What are the unit of K = 1 / (4 π ?￢ﾂﾒ)
- If a carnot engine is working with source temperature at 227⁰C and sink
- Maximum velocity of the photoelectron emitted by a metal is 1.8×10⁶ ms⁻¹.
- An ideal gas is expanding such that PT²=constant. The coefficient of volume
- A magnet of length 10 cm and magnetic moment 1 A-m² is placed
Topics: Magnetic Effects of Current and Magnetism (167)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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