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Question
Which relation defines mutual inductance using the flux linkage \[N_2\phi_{21}\] and current \[I_1\] ?
Options
\[M=\frac{N_2I_1}{\phi_{21}}\]
\[M=\frac{N_2\phi_{21}}{I_1}\]
\[M=N_2\phi_{21}I_1\]
\[M=\frac{I_1}{N_2\phi_{21}}\]
MCQ
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Solution
The total flux linkage in the secondary coil is proportional to the primary current: \[N_2\phi_{21}=MI_1\] . Dividing by \[I_1\] gives \[M=\frac{N_2\phi_{21}}{I_1}\] .
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