In an iron cored coil the iron core is removed so that the coil becomes an air cored coil. The inductance of the coil will
A. Increase
B. Decrease
C. Remain the same
D. Initially increase and then decrease
Answer: Option B
Solution (By Examveda Team)
In an iron cored coil, the presence of the iron core significantly increases the inductance due to the higher magnetic permeability of iron compared to air.When the iron core is removed, the coil becomes an air cored coil, which has much lower magnetic permeability.
As a result, the inductance of the coil will decrease.
This Question Belongs to Electronics And Communications Engineering >> Analog Electronics
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The action of JFET in its equivalent circuit can best be represented as a
A. Current controlled Current source
B. Current controlled voltage source
C. Voltage controlled voltage source
D. Voltage controlled current source
In a p+n junction diode under reverse bias, the magnitude of electric field is maximum at
A. The edge of the depletion region on the p-side
B. The edge of the depletion region on the n-side
C. The p+n junction
D. The center of the depletion region on the n-side
To prevent a DC return between source and load, it is necessary to use
A. Resistor between source and load
B. Inductor between source and load
C. Capacitor between source and load
D. Either A or B
If the iron core is removed, it will reduce the magnetic field around and hence, the inductance will decrease.