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  • Two coils A and B are separated by a certain distance. If a current of 4 A flows through A, a magnetic flux of <img alt="\mathrm{10^{-3}}" src="https://entrancecorner.oncodecogs.com/gif.latex?

Two coils A and B are separated by a certain distance. If a current of 4 A flows through A, a magnetic flux of \mathrm{10^{-3}} Wb passes through B (no current through B). If no current passes through A and a current of 2A passes through B, then the flux through A is:

Option: 1

\mathrm{5 \times 10^{-3} \mathrm{~Wb}}


Option: 2

\mathrm{4 \times 10^{-4} \mathrm{~Wb}}


Option: 3

\mathrm{5 \times 10^{-4} \mathrm{~Wb}}


Option: 4

\mathrm{2 \times 10^{-3} \mathrm{~Wb}}


Answers (1)

best_answer

Magnetic flux linked with coil \phi_{\mathrm{B}}=\mathrm{MI}_{\mathrm{A}}

\mathrm{\therefore M=\frac{\phi_B}{I_A}=\frac{10^{-3}}{4} \text { henry }}

Magnetic flux linked with coil A

\mathrm{\phi_{\mathrm{A}}=\mathrm{M}_{\mathrm{B}}=\frac{10^{-3}}{4} \times 2=5 \times 10^{-4} \mathrm{~Wb}}

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manish

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