In an iron cored coil the core is removed so that the coil becomes an air cored coil. The inductance of the coil will:
Correct answer: D. Decrease
- A. Increase
- B. Initially increase than decrease
- C. Remain the same
- D. Decrease
Explanation
When the iron core is removed from a coil, transforming it into an air-cored coil, the inductance of the coil will decrease. The iron core enhances the magnetic field and increases the inductance by providing a path for the magnetic flux. Without the core, the magnetic field is less concentrated, resulting in a lower inductance. It's fascinating how the presence or absence of the core can have such an impact on the coil's inductance!
This question appeared on the KMU Centralized Admission Test 2020 paper, which you can sit online with every answer explained.
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