Question:
Two circular coils can be arranged in any of the three
situations shown in the figure. Their mutual inductance will be
Two circular coils can be arranged in any of the three
situations shown in the figure. Their mutual inductance will be
Updated On: Sep 6, 2023
- maximum in situation (A)
- maximum in situation (B)
- maximum in situation (C)
- the same in all situations
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The Correct Option is A
Solution and Explanation
When current flows in any of the coils, the flux linked with
the other coil will be maximum in the first case. Therefore,
mutual inductance will be maximum in case (A).
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Concepts Used:
Inductance
Inductance is a key parameter in electrical and electronic circuit designs. Like resistance and capacitance, it is a basic electrical measurement that affects all circuits to some degree.
Inductance is used in many areas of electrical and electronic systems and circuits. The electronic components can be in a variety of forms and may be called by a variety of names: coils, inductors, chokes, transformers, . . . Each of these may also have a variety of different variants: with and without cores and the core materials may be of different types.
There are two ways in which inductance is used:
- Self-inductance: Self-inductance is the property of a circuit, often a coil, whereby a change in current causes a change in voltage in that circuit due to the magnetic effect of caused by the current flow. It can be seen that self-inductance applies to a single circuit - in other words it is an inductance, typically within a single coil. This effect is used in single coils or chokes.
- Mutual-inductance: Mutual inductance is an inductive effect where a change in current in one circuit causes a change in voltage across a second circuit as a result of a magnetic field that links both circuits. This effect is used in transformers.