A variable frequency a.c. source is connected only to a parallel plate capacitor. What is the effect on the displacment current `(I_D)`, if the frequency is decreased?A. `I_(D)` will decreaseB. `I_(D)` will increaseC. `I_(D)` will not changeD. `I_(D)` may increase or decrease, depending upon the values of capacitance and frequency

A variable frequency a.c. source is connected only to a parallel plate

1.	A variable frequency a.c. source is connected only to a parallel plate capacitor. What is the effect on the displacment current `(I_D)`, if the frequency is decreased?A. `I_(D)` will decreaseB. `I_(D)` will increaseC. `I_(D)` will not changeD. `I_(D)` may increase or decrease, depending upon the values of capacitance and frequency
Answer» Correct Answer - A For a capacitor `X_(C) = 1/(omega C) = 1/(2 pi fC)` `:.` If the frequecy is decreased, the impedance will increase and the conduction current will decrease. As `I_(C) = I_(D)`, hence the displacement current will decrease.

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