The RLC parallel circuit resonates at F0, and when the frequency increases to 2f0, the circuit property is (b) A. Resistive B, inductive C, capacitive For RLC series circuit in resonant state, when the power frequency increases, the circuit will show (b) A. Resistive B, inductive C, capacitive Why

The RLC parallel circuit resonates at F0, and when the frequency increases to 2f0, the circuit property is (b) A. Resistive B, inductive C, capacitive For RLC series circuit in resonant state, when the power frequency increases, the circuit will show (b) A. Resistive B, inductive C, capacitive Why

When f = F0, XL = XC
XL = WL, when the frequency increases, XL increases
XC = 1 / WC, when the frequency increases, XC decreases
The vector diagram shows that the circuit is inductive

With the same resistance and AC voltage, why is the power consumption of the whole circuit reduced when an inductor is connected in series?
Is it because the inductance makes the current in the circuit smaller

The power consumed by the resistance is equal to the square of the current multiplied by the resistance. Because the inductor has an inductive reactance to AC, the power consumed by the resistance decreases with the decrease of the current

When the frequency of the input signal increases, how will the power consumed by the resistor and inductor series circuit change?

The power is reduced
When the frequency increases, the inductive reactance of the inductor increases, that is, the ability to block the current increases, the current decreases, and the power decreases

How to understand reactive power? Do not understand that the active power of pure inductance or capacitor circuit is zero, does not consume energy, but has energy exchange with the outside world?

The reading of ammeter is active power, while reactive power is voltage and current, and the ammeter does not move. Capacitance and inductance have impedance to alternating current, but they can not complete energy conversion, only form electric field and magnetic field inside. Resistance is to convert electric energy into heat energy