What we usually call the "degree" of several degrees of electricity is actually a unit of. How many joules is one degree equal to

1kW &; H (KWH) = 1 degree = 3.6 * 10 to the sixth power J (3600000j)
Is the unit of work (W)

Exchange between coke and kilowatt

Coke is the unit of work, kilowatt is the unit of work rate. It is not interchangeable. It has the following relationship: 1kW * H = 3.6 * 10 ^ 6J
1kW = 1000W, 1W = 1J / s in junior high school physics textbooks

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1. The power is 400W. The voltage is 220V. The current is 2.9a. The frequency is 50Hz. How much electricity does it take in an hour? The answer must be 100% correct. The formula and the meaning of the letters in the formula must be written clearly. And the unit
2. When the voltage at both ends of a conductor is 3 V, the current passing through it is 200 ma. What is the resistance of the conductor Now increase the voltage to 5 v. if there are two kinds of ammeters with 0-0.6 A and 0-0.3 a ranges, which range should be chosen to measure the current of conductor?
3. Calculation formula of 220V 1kW current
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7. How many milliamps is a battery equal to one ampere
8. The current flowing through a small flashlight bulb is about 0.25A, which is equal to how many ma? The maximum power supply current of a semiconductor radio battery can reach 120mA, which is equal to how many a?
9. The voltage at both ends of a small flashlight bulb is 2.5V, and the measured current is 250mA. What is the resistance of the small flashlight bulb?
10. Conversion of mathematical units: one year equals many hours It's a lot of minutes, a lot of seconds
11. The calorific value of gasoline is 4.6 × 107 J / kg, and its physical meaning is that 5 kg gasoline can release J heat completely
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13. The calorific value of charcoal can be calculated by 6.8 × 10 6 power J / kg
14. How many joules is the heat of alcohol increased by one degree
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