Or is it about Ohm's law If the voltage at both ends of a resistance is 10V and the current passing through it is 50mA, the resistance is Ω. If the voltage at both ends of the resistance increases by 5V, the current passing through it is a. if there is no voltage at both ends of the conductor, the current passing through it is a and the resistance of the conductor is Ω

Or is it about Ohm's law If the voltage at both ends of a resistance is 10V and the current passing through it is 50mA, the resistance is Ω. If the voltage at both ends of the resistance increases by 5V, the current passing through it is a. if there is no voltage at both ends of the conductor, the current passing through it is a and the resistance of the conductor is Ω

R = u / I = 10V / 0.05A = 200 Ω
I`=U`/R=（10V+5V）/200Ω=0.075A
I '= 0A, the resistance is still r = 200 Ω

The application of Ohm's law in Physics
As shown in the figure, R1 = 5 ohm. When the switch S is open, the current representation is 1.2A; when the switch S is closed, the current representation changes by 0.3A. Calculate the resistance value of R2 [R1 is in parallel with S1, and R2 is the other]. Thank you,

If the power supply voltage is u, then
When s is disconnected: u = 1.2 * (R1 + R2)
When s is closed: u = (1.2 + 0.3) * R2
From the above, R2 = 20 ohm

Ohm's law and its application
Please write down all the formulas in ohm rating, how to calculate the sum partial resistance, the sum partial voltage, the sum partial current, and the relationship among the three in different circuits

Formula
Ohm's law formula of partial circuit: I = u / R, u = RI or I = u / R
Series connection: I = I1 = I2, u = U1 + U2, r = R1 + R2, I1: I2 = 1:1, R1 / R1 = U1 / U2
Parallel: I = I1 + I2 u = U1 = U2 r = 1 / R1 = R2 U1: U2 = 1:1 R1 / r2 = U2: U1

It is known that AE is parallel to BC, ad and BD, respectively bisecting angle EAB, angle ABC intersecting EC at point D, EC passing through point D, and ab = AE + BC

Take the f point on AB so that AF = AE, connect DF because AE / / BC so that the angle EAF + angle FBC = 180 ° because AD and BD bisect the angle EAB, the angle ABC so that the angle DAF + angle abd = 90 ° so that the angle ADB = 90 ° because AE = AF, the angle ead = angle DAF so that the triangle ADF congruent triangle ade so that the angle ade = angle ADF because the angle ade + angle BDC =

The greatest common divisor of 16.20.96 is () and the least common multiple is ()

The greatest common divisor is 2 * 3 = 6, and the least common multiple is 2 × 2 × 3 × 5 = 60

The focal length of the ellipse is 6 and passes through point P (4125)

Let the equation of ellipse be x2a2 + y2b2 = 1 (a ＞ B ＞ 0), the focal length of ellipse be 6, and pass through the point P (4125), ｜ 2A2 − B2 = 642a2 + (125) 2B2 = 1, the solution is a & nbsp; = 5B = 4 (negative rounding). Therefore, the equation of ellipse is X225 + y216 = 1

Is 209, 321, 221, 110 prime or composite?

It's all a sum
321 can be divided by 3, 221 = 13 × 17, 110 can be divided by 2 and 5
209 = 11 × 19 is also a composite number

In the circuit as shown in the figure, the electromotive force of the power supply is e, the internal resistance is r, C is the capacitor, R0 is the constant resistance, and R is the sliding rheostat. After the switch is closed, the bulb l can light normally. When the slide of the sliding rheostat moves to the right, the following judgment is correct ()
A. Bulb l will be dimmed B. bulb l will be brightened C. The amount of charge of capacitor C will decrease D. the amount of charge of capacitor C will remain unchanged

A. When the slide of the sliding rheostat moves to the right, the resistance of the connecting circuit of the rheostat increases, the external resistance increases, the current in the circuit decreases, and the light l darkens. Therefore, a is correct, B is wrong. C. when the current in the circuit decreases, the voltage of the internal resistance of the power supply decreases, and the terminal voltage increases. The voltage of the capacitor is equal to the terminal voltage. It can be seen that the voltage increases, and the capacitance increases according to q = Cu The charge of C will increase. So CD is wrong. So select: a

Explain sentences
Explain sentences in English
1. Our clock at the runway station should be accurate
2、In ancient times,women were not allowed to work outside.
3、What did you do with the broken glass?
4、The police entered the pizza palace at half past ten.

1.Our clock at the railway station should walk accurately.
2,In ancient times,women were allowed to stay inside.
3.How did you deal with the broken glass?
4.The police went through the pizza palace at half past ten.

Given that the axis of symmetry of the parabola y = AX2 + BX + C is x = 2 and passes through points (1,4) and (5,0), the analytical expression of the parabola is_________ .
4. (2004, Wuhan) it is known that the opening of the graph of quadratic function is downward and intersects with the positive half axis of y-axis_________ .

Y = - x2 + 2x + 4. For example, y = - x2 + 1 5.1