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When a consumer is connected to the lighting circuit for 5 minutes, the energy consumed is 3.3 × 10 to the fifth power J, then the current passing through the consumer is（ When a consumer is connected to the lighting circuit for 5 minutes, the consumed electric energy is 3.3 × 10 to the fifth power J, then the current passing through the consumer is () a
The power of electric appliance is 330000 / (5 * 60) = 1100W
The current is 1100 / 220 = 5A
In Lenz's law of maintenance electrician, electric energy w = q, heat / (the 6th power of 3.6 * 10) = electric degree. Why is it the 6th power of 3.6 * 10,
If 1kwh is defined as one degree of electricity, then one degree of electricity = 1000 * 3600 = 3.6 * 10 ^ 6J
As for the power supply, the following statement is correct: a. the power supply can convert other forms of energy into electrical energy; B. in the power supply, the power supply moves the charge by Coulomb force; C. in the power supply, the charge moves in a directional direction only under the action of non electrostatic force; D. the power supply is the device that generates the charge
A
The function of power supply is to convert other forms of energy into electric energy, right?
The function of power supply is to apply voltage to electric appliances
The function of power supply is to use electric current to pass through
Which of the three is right
1, 2, 3... Because there is voltage, so there is current. The power supply provides voltage, which is playing Chinese
RELATED INFORMATIONS
- 1. The simplest circuit consists of four parts, which are the power supply of (), the wire that converts electric energy into other forms of energy (), () and the control circuit The simplest circuit consists of four parts: the power supply of (), the wire that converts electric energy into other forms of energy (), and the wire that controls the circuit on and off
- 2. From the positive side of the power supply to the negative side, the electric energy will be consumed along the way, so the current eye circuit gradually weakens. Right, why
- 3. The circuit in which the current comes out of the positive pole of the power supply and directly returns to the negative pole of the power supply without passing through the electric appliance is called the circuit
- 4. What are the following ways of energy conversion It's warm to eat food in winter Stir the water in the cup to make it warm Electric oven food
- 5. Electrolytic water experiment I want to do the electrolytic water test! But I don't know how many volts the power supply needs to be qualified! Is the ordinary 1.5V dry battery OK?
- 6. Problems in the experiment of electrolyzing water In the electrolytic water experiment, there are three glass tubes a, B and C. tube a is positive, tube B is negative, and tube C is filled with water, which can flow to the positive and negative stages, that is, the one in the middle of them. Excuse me, when the power is on, what is the phenomenon in tube C? What is the reason for the phenomenon?
- 7. Lightning is a kind of discharge phenomenon in the atmosphere. The speed of lightning light is 3.0 * 10 quintic power. If there is a lightning that has experienced 0.0025s, then the lightning light is in the air What's the distance?
- 8. Voltage unit conversion 10 to the 5th power v =? KV 2 * 10 to the - 5th power =? MV 100mV =? V, I'm in a hurry to help
- 9. Generally, a lightning process takes about 0.0.3s, 17. Usually, a lightning process lasts about 0.0.3s, which is composed of several successive flashes. The duration of each flash is only 40 ~ 80, and the charge transfer mainly occurs in the first flash process. Before a certain lightning, the potential difference between cloud and ground is about 1.0 x 109 V, and the distance between cloud and ground is about 1 km: the charge transferred between cloud and ground in the first flash process is about 6 C, It is assumed that the electric field between cloud and ground before lightning is uniform. According to the above data, the following judgment is correct A. The instantaneous value of lightning current can reach 1 × 105a B. The average power of the whole lightning process is about 1x1014w C. Before lightning, the electric field intensity between cloud and ground is about 1 × 106 V / m D. The energy released during the whole lightning process is about 6 x 106 J
- 10. Rain, cloud, snow, frost, lightning, rainbow, wind and all other atmospheric physical phenomena are called what phenomena? Must be accurate, choose: a climate phenomenon B weather phenomenon C meteorological phenomenon
- 11. Does the current consume as much power as it does A said that electrician and current are the same physical quantity. There is no difference between them. They are equal in size B: how much work does the current consume Are they all right? B why not? A why not? I'm adding 20 points. Is that ok?
- 12. All electrical appliances can convert electric energy into energy
- 13. The wind power station converts the heat energy of the wind into electricity
- 14. The following appliances are used in our daily life, and the energy is obtained by chemical reaction: (1) microwave oven; (2) gas water heater; (3) electric stove; (4) alcohol lamp; (5) solar cooker A. ①②③B. ①④⑤C. ②④D. ②⑤
- 15. After the invention, people will be able to convert other forms of energy into electricity on a large scale
- 16. What can be converted into what can be converted into what can be converted into when the battery is used for external power supply? What can be converted into what can be converted into when the generator is used for power generation?
- 17. How can inductors convert the stored magnetic energy into electrical energy and send it back to the power supply? The pure inductor does not consume energy. In the first and the third quarter cycle, P is positive, and the capacitor takes electric energy from the power supply and converts it into magnetic energy, which is stored in its magnetic field; in the second and the fourth quarter cycle, P is negative, Inductive elements convert the stored magnetic field energy into electric energy and send it back to the power supply. How can inductive elements convert the stored magnetic field energy into electric energy and send it back to the power supply? Also, if the pure inductance does not consume energy, where does the electromagnetic torque come from? Because the stator winding of the motor is also pure inductance, Electric energy is converted into magnetic energy, and then magnetic energy is converted into electric energy. How can there be electromagnetic torque output?
- 18. Try to analyze the energy conversion between wind power for home lighting, if there is no energy loss, what will happen
- 19. What is the energy conversion in the process of wind power generation
- 20. What is the specific process of wind power generation?