The self-inductance of a solenoid is increased when a soft iron core is inserted into it. This is because the soft iron core_______________?
Correct answer: C. Improves the flux linkage between the turns of the coil
- A. Decreases the resistance of the solenoid
- B. Reduces the effect of eddy current
- C. Improves the flux linkage between the turns of the coil
- D. Increases the mutual inductance between the solenoid and the coreElectricity
Explanation
A soft iron core has high permeability, concentrating magnetic flux through the solenoid and increasing the flux linkage per unit current. Since L = flux linkage/current, the self-inductance rises.
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