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!
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About AC Through Resistor, Capacitor and Inductor
Alternating current through a resistor, capacitor and inductor involves phase relationships between voltage and current, reactance, impedance and energy transfer. A resistor keeps voltage and current in phase, while a capacitor and inductor produce opposite phase shifts, a distinction used in circuit diagrams and numerical calculations.
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