Coefficient of coupling between two coils of self-inductances ${L_1}\,\,{\rm{and}}\,\,{L_2}$ is unity. It means

${\rm{100}}\,\,{\rm{\% }}$ flux of ${L_1}$ is linked with ${L_2}$

${\rm{50}}\,\,{\rm{\% }}$ flux of ${L_1}$ is linked with ${L_2}$

$\sqrt {{L_1}} $ time of flux of ${L_1}$ is linked with ${L_2}$

JEE PHYSICS MCQ: ELECTRO MAGNETIC INDUCTION

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Understanding +4 | -1

Coefficient of coupling between two coils of self-inductances

{L_1}\,\,\mathrm{and}\,\,{L_2}

is unity. It means

View answer and explanation

Correct option: B

\mathrm{100}\,\,\mathrm{\% }

flux of

{L_1}

is linked with

{L_2}

Option B is correct because a coefficient of coupling of unity (1) means 100% of the flux from one coil links with the other.

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R

n

i=i_0 \sin \omega t

N

4 \mathrm{sec}

0.1\,\,{m^2}

\mathrm{60}

\mathrm{0}\mathrm{.4}\,\,\mathrm{T}

\mathrm{100}

\mathrm{50}\,\,\mathrm{mH}

\mathrm{2 A}