What is the formula of work done by current?

What is the formula of work done by current?

W=Q=PT=UIT=IIRT

Electric power is the work done by current It is equal to With The ratio is defined as /…… The deformation formula is /…… .

The physical quantity of how fast an electric current does work, which is equal to the ratio of work to the time taken to complete it. Define work divided by time. P = w / TP = UI

The power of lighting lamp the average time of using electricity every day the electric energy consumed every day the electric energy consumed every month

If the power of the lighting lamp is 100W and the power consumption is 10 hours per day, then the daily power consumption is 1000W. H (1 kwh, that is, 1 kilowatt hour), and you can calculate it yourself in a month

The square of 1000 is 100 times 100 times 100
The square of 1000 is 100 times 100 times 100

Do everything possible

Apple is 5 / 6 of pear and banana is 3 / 2 of pear. 1500 kg Apple has been transported. How many kg banana?

1500÷5/6×3/2
=1800×3/2
=2700 kg

3a+2=b 3+2b=a
Seeking ab

3+2b=a
3+2(3a+2)=a
3+6a+4=a
5a=-7
a=-7/5
b=3*-7/5+2=-21/5+2=-11/5
ab=-7/5*-11/5=77/25

The imaginary number Z = (X-2) + Yi, where x and y are real numbers. When the module of the imaginary number is 1, the value range of Y / X is
The answer is [- √ 3 / 3,0) U (0, √ 3 / 3]
Question: 1. There is an answer: "module = root sign [(X-2) ^ 2 + y ^ 2] = 1, that is, (X-2) ^ 2 + y ^ 2 = 1, which means the circle with the center of the circle (2,0) and radius of 1." why is it not half of the circle with Y > 0? (because there is a root sign) 2. Why can't the range be taken as 0?

Root [(X-2) ^ 2 + y ^ 2] = 1
It's obvious that y can go to any real number
Not Y > 0
Z is an imaginary number
So y ≠ 0
So y / X ≠ 0

There are 480KG oranges in the fruit wholesale market. Apples are 25% less than oranges and 12.5% more than pears. How many kg pears are there in the fruit wholesale market?

480 × (1-25%) / (1 + 12.5%), = 480 × 0.75 ／ 1.125, = 320 (kg); answer: there are 320 kg pears in the fruit wholesale market

In the natural number 1,2 '` n, if you want to take any 50 different numbers, the difference between two numbers must be equal to 7. What is the largest number of N?

(1,8), (2,9)... (7,14) > 7 groups: 85 ~ 98
Above, 1 ~ 98 is divided into 49 groups, of which any 50 numbers must be taken in a group of two numbers, the difference is 7
So n

The sinusoidal AC current is the sum of the current_________________________ What should be filled in the underline?

The size and direction change with time
Sinusoidal AC current refers to the frequency of current___________ The size and direction change with time
______________ The current varies according to the law of sine