All the formulas related to Ohm's law As long as it's related to Ohm's law

All the formulas related to Ohm's law As long as it's related to Ohm's law

I=U/R
(Ohm's law for all circuits)
U (electromotive force of power supply) = voltage of external circuit + current * internal resistance of power supply
Voltage of external circuit = equivalent resistance of external circuit * current
P=I^2*R=U^2/R

Xiaowei thought: "from Ohm's law formula I = ur, r = UI can be obtained. R = UI indicates that the resistance R of a conductor is directly proportional to the voltage u at its two ends and inversely proportional to the current I passing through the conductor." is this statement right? Why?

A: No, because the resistance has nothing to do with the voltage at both ends and the current passing through it, but only with its material, length, cross-sectional area and temperature

All the formulas of Ohm's law

Hello! Your questions are as follows:
Mathematical expression of Ohm's Law: I = u / R
The deformation form of the formula is: r = UI; u = IR
Hope to help you, if you have any questions, you can ask~~~
I wish you progress in your studies and make progress! (*^__ ^*)

Let u = R, a = {x | x2 + ax-12 = 0}, X | x2 + ax-12 = 0}, B = {x | x2 + BX + b2-28 = 0},
If a intersects B = {2}, find the value of real numbers a and B

A intersection B = {2}, it is proved that substituting 2 into several equations is satisfied, substituting 4 + 2a-12 = 0, 4 + 2B + 2b-28 = 0, the solutions a = 4, B = 6, respectively

In the library of Hongxing primary school, science and technology books are three times as many as story books and comic books are two times as many as science and technology books
How many copies?

Set up x scientific books and Y comic books
X+Y+1800—X+Y=1800

On the number axis, the distance from the point representing 1 is 2. What is the number represented by the point of unit length? What is the number with the smallest absolute value? (these are two problems)

1-2=-1
1+2=3
So there are two points, - 1 and 3
The absolute values are 1 and 3, respectively
So the number with the lowest absolute value is - 1

If the quadratic function f (x) = x & # 178; - (A-1) x + 5 is an increasing function in the interval [2, + ∞), then the value range of real numbers a and B is
It's urgent

If the opening of F (x) is upward, the axis of symmetry is x = (A-1) / 2 and is an increasing function in the interval [2, + ∞), then the axis of symmetry must be on the left side of the interval, that is, (A-1) / 2

We walked into the classroom with a happy mood

Repeat, remove the "easy"

3(m-n)²-7(m-n)-3(m-n)²+6(m-n)

The original formula = 3 (m-n) &# 178; - 7 (m-n) - 3 (m-n) &# 178; + 6 (m-n)
＝3(m-n)²-3(m-n)²+6(m-n)-7(m-n)
=-(m-n)
=n-m
Please accept, thank you for your support!

Let f (x) be a monotonically increasing odd function defined in (- infinite, + infinite), and G (x) be the inverse function of F (x). It is proved that G (x) is a monotonically increasing odd function

(1) Let f (x) be an odd function defined in (- infinite, + infinite)
　f(-x) = -f(x) = y,
So, the inverse function of this function is
　　g(-y) = g[f(x)] = x = -(-x) = -g[f(-x)] = -g(y),
That is, G (x) is also an odd function
(2) for any Y1, Y2 ∈ R (f) = D (g): Y1