CUET · PHYSICS · PYQ PAPER 2023
The Mutual inductance \(M _{12}\) of coil 1 with respect to coil 2-
- A Decreases as they are brought nearer.
- B Depends on the current passing through the coils.
- C Increases when one of them is rotated about an axis.
- D is same as \(M _{21}\) of coil 2 with respect to coil 1.
Answer & Solution
Correct Answer
(D) is same as \(M _{21}\) of coil 2 with respect to coil 1.
Step-by-step Solution
Detailed explanation
This is a fundamental principle known as the reciprocity theorem, which states that the mutual inductance between two circuits is identical ( \(M _{12}= M _{21}\) ) regardless of which coil acts as the source. It is a constant property determined solely by the geometry, size,…
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