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If frequency increase, IC will
Increase
Decrease
Remain same
None of these
Increase
In an A.C. circuit containing a capacitor, the capacitive reactance (XCтАЛ) is inversely proportional to frequency (f). As frequency increases, XCтАЛ decreases, which leads to an increase in the capacitive current (ICтАЛ) according to Ohm's law (ICтАЛ=XCтАЛVтАЛ).
In an A.C. circuit containing a capacitor, the capacitive reactance (XCтАЛ) is inversely proportional to frequency (f). As frequency increases, XCтАЛ decreases, which leads to an increase in the capacitive current (ICтАЛ) according to Ohm's law (ICтАЛ=XCтАЛVтАЛ).
XCтАЛ=2╧АfC1тАЛ тАФ Capacitive Reactance
ICтАЛ=VтЛЕ2╧АfC тАФ Capacitive Current
The current flowing through a capacitor is governed by the relation ICтАЛ=V├Ч2╧АfC. Because the current is directly proportional to frequency, an increase in frequency results in a higher rate of charge and discharge cycles, effectively allowing more current to pass through the dielectric medium of the capacitor.
Capacitive reactance (XCтАЛ) is inversely proportional to the frequency of the supply voltage.
A capacitor acts as an open circuit to D.C. (f=0) and as a short circuit at very high frequencies.
In A.C. parallel circuits, frequency-dependent branches determine the total admittance of the circuit.
Used in frequency-sensitive filtering applications.
Essential for power factor correction using capacitor banks.
High frequency sensitivity can lead to instability in resonant circuits.
Excessive current at high frequencies can overheat components.
High-pass filters
Coupling capacitors in amplifiers
Power factor improvement in industrial grids
This behavior is specific to capacitive circuits; for inductive circuits, current decreases as frequency increases because XLтАЛ=2╧АfL.
The option 'Decrease' is incorrect because it describes the behavior of an inductive load.
A is correct тАФ The capacitive current ICтАЛ increases because the capacitive reactance XCтАЛ decreases as the frequency increases.
Always remember the mnemonic 'ELI the ICE man': In Inductors (L), E leads I; in Capacitors (C), I leads E, and remember XCтАЛтИЭ1/f vs XLтАЛтИЭf.