16:I[8216,["972","static/chunks/972-b28da0de92681928.js","47","static/chunks/47-a7f06e9eda1ac756.js","115","static/chunks/app/%5Bexam%5D/questions/%5Byear%5D/%5Bsubject%5D/%5Bchapter%5D/%5BquestionId%5D/page-7b6f0a12b9cc0206.js"],"BackButton"] 17:I[1553,["972","static/chunks/972-b28da0de92681928.js","47","static/chunks/47-a7f06e9eda1ac756.js","115","static/chunks/app/%5Bexam%5D/questions/%5Byear%5D/%5Bsubject%5D/%5Bchapter%5D/%5BquestionId%5D/page-7b6f0a12b9cc0206.js"],"QuestionViewer"] 15:T52b,{"@context":"https://schema.org","@type":"Quiz","name":"Mht Cet 2024 Electromagnetic Induction PYQ with Solution","url":"https://pyq-test-series-platform-alsjdcxu2-sameers-projects-41c5a71e.vercel.app/mht-cet/questions/2024/physics/electromagnetic-induction/m4v5w12f","educationalLevel":"Entrance exam preparation","about":"Mht Cet / Physics / Electromagnetic Induction","hasPart":{"@type":"Question","name":"Mht Cet 2024 Electromagnetic Induction PYQ with Solution","text":"An air cored coil has a self inductance 0.1 H . A soft iron core of relative permeability 1000 is introduced and the number of turns is reduced \\left(\\frac{1}{10}\\right)^{\\text {th }}. The value of self inductance is","eduQuestionType":"mcq","acceptedAnswer":{"@type":"Answer","text":"C"},"comment":{"@type":"Comment","text":"The self-inductance L of an air-cored coil is given by: L_1 = \\frac{\\mu_0 N^2 A}{l} where: \\mu_0 is the permeability of free space, N is the number of turns, A is the cross-sectional area, l is the length of the coil. When a soft iron core with a relative permeability \\mu_r is introduced, the inductance becomes: L_2 = \\frac{\\mu_0 \\mu_r N'^2 A}{l} where N' = \\frac{N}{10} . Given that \\mu_r = 1000 , the ratio of the old inductance L_1 to the new inductance L_2 is: \\frac{L_2}{L_1} = \\frac{\\mu_r (N..."}}}18:T463,

The self-inductance $ L $ of an air-cored coil is given by:

$$ L_1 = \frac{\mu_0 N^2 A}{l} $$

where:

$ \mu_0 $ is the permeability of free space,

$ N $ is the number of turns,

Electromagnetic Induction

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