In the resistance inductance series circuit, the phase relationship between the inductance voltage and the resistance voltage is very complex

In the resistance inductance series circuit, the phase relationship between the inductance voltage and the resistance voltage is very complex

The voltage at both ends of inductor is 90 degrees higher than that at both ends of resistor
Reason: the inductor is connected in series with the resistor, the current I flowing through the resistor is the current I flowing through the inductor, and I lags behind the voltage at both ends of the inductor
UL 90 degrees. Because the voltage at both ends of the resistor is in phase with the current flowing through the resistor, the voltage at both ends of the inductor is 90 degrees higher than that at both ends of the resistor

In AC circuit of series circuit of resistance and inductance, when the resistance and inductance are equal, the phase of voltage and current: the voltage is π / 4 ahead, how to calculate it?

π / 4 represents 45 degrees. Explain with impedance triangle: resistance and inductance are two right sides of right triangle respectively, and the hypotenuse is impedance. When resistance and inductance are equal, the two right sides of resistance and inductance are equal, then it is an equilateral triangle of 45 degrees. It is a simple basic knowledge, and we need to deepen our understanding

In a pure capacitor circuit, voltage and current are seen in terms of phase. In a pure inductor circuit, voltage and current are seen in terms of phase
1. In pure capacitance circuit, voltage () and current are seen from phase, while in pure inductance circuit, voltage () and current are seen from phase. (filling ahead or behind)

The capacitance is 90 ° ahead of the voltage
Resistance is the phase of voltage and current
The inductance is 90 ° ahead of the current
Supplementary questions:
1. Lag
2. Ahead of time

The current phase of capacitor is ahead of the voltage phase, how to understand, and the voltage is 0 at the beginning, why the current is the largest

At the beginning of the capacitor charging process, the current slowly enters into the capacitor. After a short period of time, it will reach the rated voltage of the capacitor. When the voltage or current is zero, it is called "initial phase". The charging current will change from large to small

Calculate 24:48 10 10, 49 9 10, 62 4 7, 24 6 8, 36 7 7, 56 6 6, 7 5 6, 14 4 10, 14 5 5, 22 8 10
Please, I have a lot more!

4+10+10
9+9+10-4
4*6
4*6
(7-3)*6
5*6-6
(6+6)*(7-5)
(10-4)*4
4*(1+5)
2*8+10-2

Advanced mathematics, the use of definite integral
If f (x) is continuous on (- ∝, + ∞) and f (x) = ∫ (0, x) f (T) DT, it is proved that f (x) ≡ 0;

Sorry
I don't know how to play that integral symbol
However, the following formula = f (x) * x T is an arbitrary variable, which can be replaced by X
So the equation becomes f (x) = f (x) * X
And because x is arbitrary, it can take any value
All we can do is f (x) is equal to zero

The volume of the cylindrical bucket is 56.52 cubic decimeters, and the diameter of the bottom measured from the inside is 4dm. Now seven ninths of the bucket is filled with water, and the formula for calculating the water depth is given

1. Height of bucket (volume △ bottom area): 56.52 △ 3.14 × 2 & # 178;) = 4.5 (DM)
2. Water depth: 4.5 × 7 / 9 = 3.5 (DM)

If the three views of a geometry are as shown in the figure, the front view and the left view are equilateral triangles with side lengths of 2, and the top view has a square outline (unit length: cm), then the side area of the geometry is ()
A. 23cm2B. 43cm2C. 8cm2D. 14cm2

From the known three views, we can get that the geometry is an equilateral pyramid, and from the main view and the left view are equilateral triangles with side lengths of 2, we can get that the length of the edge on the bottom surface of the pyramid is 2, the height of the pyramid is 3, then the side height of the pyramid (the height of the side) is 2, so the side product of the pyramid s = 4 × (12 × 2 × 2) = 8cm2, so select C

After translating the parabola y = x ^ 2 according to the vector a = (m, n), there is only one common point (3,1) between the parabola y = x ^ 2 and the straight line 2x-y-5 = 0

After y = x ^ 2 is translated according to the vector a = (m, n), the analytic formula is y = (x-m) ^ 2 + n. because it passes through the point (3,1), so 1 = (3-m) ^ 2 + NN = 1 - (3-m) ^ 2, the equation 2x-5 = (x-m) ^ 2 + 1 - (3-m) ^ 2x ^ 2-2mx-2x + m ^ 2 + 6 - (3-m) ^ 2 = 0, because there is only one common point, so (2m + 2) ^ 2-4m ^ 2-24 + 4 (3-m) ^ 2 = 08m + 4

How many cubic meters is a ton of peat soil equal to?

Peat soil is mainly formed by the decomposition of plants in the soil. The bulk density varies greatly and is very uncertain. The formation of peat soil is different in different places and environments. Generally, the bulk density is about 1.5 tons / m3