How can I not understand the principle of LC parallel resonant circuit? Can I use examples in my life to illustrate it,

How can I not understand the principle of LC parallel resonant circuit? Can I use examples in my life to illustrate it,

First of all, you need to understand the characteristics of capacitor and inductor! Then you can understand the principle of LC oscillation! The electrical characteristics of capacitor are charge energy storage and discharge energy release! Because when its initial charge current reaches its maximum, the voltage at both ends is the minimum! That is to say, the on-line current of capacitor is one gap ahead of the voltage! The angle of this gap is 90 degrees! Let's

How to calculate the peak voltage and current of series LC resonant circuit
Given a series LC resonant circuit, the applied voltage is u, coil inductance L, capacitance C, coil quality Q, coil resistance R, frequency f. if other factors are ignored, how to calculate the maximum current of the circuit during resonance? How to calculate the maximum voltage of the two ends of the capacitor in the circuit?

The maximum current I = u / R, UC = UL = Q * u (the voltage values at both ends of L and C are in the opposite direction)

LC circuit parallel resonance, why the reactance disappeared, the LC total resistance is the largest? I am amateur, please talk about popular point, thank you

When LC circuit is parallel resonant, the so-called reactance disappearance means that the current of L and C can be exchanged to achieve balance without the need of external circuit. For external circuit, the minimum current means the maximum resistance

Verification: A2 + B2 + C2 + D2 ≥ AB + BC + CD + da

It is proved that: ∵ A2 + B2 ≥ 2Ab, B2 + C2 ≥ 2BC, C2 + D2 ≥ 2CD, D2 + A2 ≥ 2da. By adding the above inequalities, A2 + B2 + C2 + D2 ≥ AB + BC + CD + Da is obtained if and only if a = b = C = D. A2 + B2 + C2 + D2 ≥ AB + BC + CD + da

Physical voltage current resistance
In parallel circuit, total current is not equal to branch current. What about voltage and resistance?

In a parallel circuit: the total current is equal to the sum of the branch currents
The voltage at both ends of each branch is equal
The reciprocal of the total resistance is equal to the sum of the reciprocal of the partial resistances

With a 15.7-meter-long rope around a tree for 10 times, how many meters is the diameter of the tree?

15.7 ﹣ 10 ﹣ 3.14 = 1.57 ﹣ 3.14 = 0.5 (m) a: the diameter of this big tree is 0.5 m

16. The symbol of specific heat capacity unit is correct
A J/kg·K B J·Kg-1·K-1 C J/kg·K-1 D J/kg/

The answer is B
The unit of specific heat is the composite unit
In the international system of units, the main unit of energy, work and heat is Joule, and the main unit of temperature is Kelvin. Therefore, the main unit of specific heat capacity is J / (kg · K), which is read as "Joule [Joule] per kilogram"

The horizontal pulling force of equal size acts on the original static objects a and B with mass M1 and M2 respectively, making a move along the smooth horizontal plane and B move along the rough horizontal plane with the same displacement. Then the work W1 and W2 of pulling force F on a and B are compared___ ．

From the formula w = FS, we can see that the force F is constant, and the distance s between two objects is equal, so W1 = W2

How many square meters is an acre equal to
There is an acre of land, eight meters high. What is the unit of square meter? Is cubic meter equal to square meter?

One mu = 666.667 square meters,
8m high, volume = 666.667 × 8 = 5333.33 (M3) = 5333.33 (M3)

The density of 7.5 * 10 three times of the metal ball in air weighing is 1.47n, immersed in water is 1.176n, which is hollow or solid

Hollow
Let's say it's V in volume and P in density
Then p · V · g = 1.47n
Because it's submerged in water
Therefore, pwater · V · g = 1.176n
V and G are eliminated by dividing the two equations
That P: P water = 5:4 = 1.25 * 10 three times
So it's hollow