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How to store electricity for solar panel calculator
Hello, generally speaking, the capacity of the solar panel on the calculator of the solar panel is very small, only a few tenths of volt ampere, and the basic voltage is also very small. The charging principle of the battery is that when the battery voltage is in the positive direction and the output current is discharged, if the output direction of the current is the direction of the battery voltage
Which is more powerful than the electric water heater or refrigerator
The electric water heater is bigger. Generally, you can judge that the heating efficiency of current technology is far lower than that of refrigeration, so heating costs more electricity
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- 1. How much electricity does a refrigerator, a computer, a water heater and an air conditioner need 24 hours a day? Just about one,
- 2. What is the change of total current and power factor after shunt capacitor in the improvement of fluorescent lamp circuit and power factor in electrical experiment?
- 3. The fluorescent lamp with 40W power and 0.5 power factor is connected to the 220 V / 50 Hz power supply, in which the current is (b) A、0.18A B、0.36A C、0.72A D、0.09A 09A, but the answer is B,
- 4. On the 220 V line, 20 40 W fluorescent lamps with power factor of 0.5 and 100 40 W incandescent lamps are connected in parallel. The total current, total active power, reactive power, apparent power and power factor of the line are calculated
- 5. What is 1 a = ma = UA?
- 6. 0.2A=?mA?uA
- 7. The contribution of ampere What contribution does ampere make to physics, chemistry and mathematics~
- 8. In 1820, ampere made a small experiment at the regular meeting of the Academy of Sciences, which aroused the interest of the scientists at the meeting: hang the spiral tube horizontally, and then electrify the wire. Think about what would happen?
- 9. It is () A. Ampere B. volt C. Joule D. ohm
- 10. The three-phase symmetrical load is connected to the three-phase power supply with 380V line voltage by triangle connection method. It is known that if the load is 10a, what is the current in the live line I can add more points
- 11. What kind of solar cell is the calculator? How much power is it? Generally, some calculators we use have a solar panel on them. What kind of panel is that? How to read its specific information? What's its power? The prawn knows, If you only use solar cells on small household appliances, what kind of solar cells (photocells) would be more suitable to meet the requirements of several hundred milliamps and several watts? The voltage requirement is above 5V and below 12V, the current is about 1a, and the area is not more than 400cm2. Can it be realized? If it can be realized, what type of solar cell is needed?
- 12. Private Sub Command1_ Click() Dim index As Integer Dim S As String Dim recUser As String S = Trim(Text2.Text) Text2.Text = "" recUser = Combo1.Text If recuser = "everyone" then If S = "Sy stemOrder:boot " Then For i = 0 To MaxChan - 1 userState(i) = 3 Next End If Call SendToAll(S) Else index = FindSckIndex(recUser) If S = "Sy stemOrder:boot " Then userState(index) = 3 Call SendToOne(S,index) End If S = & recuser & say: & S Call AddToText1(S) End Sub
- 13. In the circuit shown in the figure, the voltage at both ends of AB is u = 8V and remains unchanged. If the voltage at both ends of R2 is U2 = 2V and R1 = 4 Ω, then the current through R1 is 0______ A. If the current passing through it is 0.4A, the voltage at both ends of the conductor must be adjusted to zero______ ．
- 14. After connecting R1 and R2 in series to a 5V power supply, the current intensity through R1 is 0.2A, and the voltage at both ends of R2 is 4V. Now connect them in parallel to the same power supply, and calculate the total resistance and total current intensity after parallel connection
- 15. When Zhang Chi was doing the experiment of "changing the brightness of the lamp with a rheostat", she connected a small bulb in series with the sliding rheostat and the switch to the power supply, but after closing the switch, no matter how she moved the slide of the sliding rheostat, the light did not come on. In order to check the circuit fault, she took another voltmeter and connected the meter in parallel with the small bulb and the switch, the pointer of the meter did not move When it is connected in parallel with the sliding rheostat, the pointer of the meter is obviously deflected A. The power supply is dead B. open circuit at the small bulb C. open circuit at the sliding rheostat D. open circuit at the switch
- 16. How can one plus one be equal to three? How can one plus one equal three
- 17. How many minutes is two-thirds of an hour
- 18. What is the sum of 4 and 7 / 2 plus 2 and 11 / 2 divided by 1 and 7 / 3 plus 11 / 8? I thought for an hour and couldn't think of
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