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The rated voltage is 220 V, the piezoelectric frequency is 50 Hz, the rated power is 2000 W. what is the energy consumption of the water boiler? No matter the working time Don't just have the answers. Write the formula for me,
The rated power of 2000W means that the energy consumption of electric appliances is 2kW per hour, that is, 2 kwh, which is equal to 7.2 times 10 to the sixth power Joule
The calculation formula is: w = uit = Pt, the international unit of electric work is Joule (J), and the common unit is: kwh = 1kwh = 3.6 × 106j
The relationship between current and voltage (10 ohm resistor) who has the experimental data?
I'm not going to take the circuit test. I want to get the data directly
I＝U/R
So,
When u = 10V, I = 0.1A
When u = 20V, I = 0.2A
When u = 30V, I = 0.3A
When u = 40V, I = 0.4A
But I still agree with the third floor
You can't recite data
Still want to understand the circuit is how to connect
The resistance values of a and B are 10 ohm and 15 ohm respectively. When they are connected to different voltage power supply, the current passing through is the same
The resistance values of a and B are 10 ohm and 15 ohm respectively. When they are respectively connected to different voltage power supply, the current passing through is the same. If a is connected to a 20V power supply, how many volts is B connected to
Current = 20 △ 10 = 2A;
B voltage = 2 × 15 = 30V;
I'm very glad to answer your questions. Skyhunter 002 will answer your questions
If you don't understand this question, you can ask,
In a circuit, the 5 ohm resistor is replaced by 10 ohm, the voltage increases, and the sliding rheostat in this circuit is adjusted
Question: Why did the sliding rheostat increase the resistance and decrease the voltage? Why did the sliding rheostat change a 5 ohm resistor into a 10 ohm resistor and increase the voltage?
A resistor and a sliding rheostat are connected in series. The voltage obtained by a circuit resistor in series is proportional to the size of the resistor. If the total voltage is constant, the resistance of the sliding rheostat increases, and the voltage increases, the voltage of the resistor decreases
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