The bulb is marked with PZ 220 V 100 W, which is connected to 220 V power supply. What is the actual power
About 100W. When the voltage is 220, it is 100W
If two bulbs L1L2 marked with "220 V 40 W" and "220 V 100 W" are connected in series with 220 V in the circuit, what is the current at both ends, can they light normally?
What is the voltage and power of the two lamps
U = 220 V, U1 = U2 = 220 V, P1 = 40 W, P2 = 100 W. because the two bulbs marked with "220 V 40W and" 220 V 100W "are added to the 220 V circuit in series, each bulb can't light normally (because they can't reach their rated voltage)
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- 1. There is a light bulb marked with 220 V, 100 W (1) The bulb is normally emitting. What is the current passing through the bulb? What is the resistance of the bulb? (2) How much power is consumed when the bulb works normally for 10 minutes?
- 2. Find the maximum power of load resistor RL in the circuit below
- 3. When the power supply voltage is fixed, the load with large resistance is a large load? Isn't it true that the size of the load is only related to the current? I remember the book said that the load with large current is called large load, so in the series circuit, the current is equal everywhere, and there will be different loads?
- 4. The equivalent resistance of the two terminal network is 10 ohm, the open circuit voltage is 40 V, and the maximum power consumed by the load is?
- 5. The same voltage power supply in parallel, in each power supply in series with a very small resistor can balance the current, what is the principle? Several power supplies of the same voltage are connected in parallel to provide large current. A small resistor in series on each power supply can balance the current. What is the principle? Now I also want to prevent one of the power supplies from breaking down and affecting other power supplies. Therefore, a diode is connected to each power supply, and the diode also has a certain resistance. Can it not only prevent the current from flowing back, but also balance the current? Can diode be connected in series instead of resistor? I know that the purpose is to prevent the current from flowing back, but what is the principle to facilitate my future use,
- 6. Ohm's law of the whole circuit points out that the current in the circuit is determined by the internal resistance of the power supply and the load resistance A power B voltage C resistance D electromotive force,
- 7. The electromotive force of the power supply is e, the internal resistance is r, and the power supply supplies power to the variable resistance R. is the following statement about the terminal voltage correct? Why Because u = IR, when R increases, does the terminal voltage also increase
- 8. How much resistance should a 36V, 60W arc lamp be connected in series in order to make it shine normally in the circuit with 110V supply voltage
- 9. A "6V, 0.5A" small bulb connected in series with a 24 ohm resistor is connected to a power supply, which can make the small bulb work normally. What is the power supply voltage? (with the knowledge solution of elementary 2)
- 10. When a small light bulb works normally, the current is 0.5A and the resistance is 5 Ω. Now connect it to the circuit with voltage of 6V to make the small light bulb work normally, Should_____ Connect a resistance value of__________ Ohm resistance
- 11. The consumer with resistance R is connected to the power supply, and the current passing through the consumer is I, so that the current passing through the consumer is reduced to 1 / 3 of the original. A () resistor should be connected to the consumer in series
- 12. 12V / 2A regulated power supply is out of order. It can be replaced by 12V / 1.2A regulated power supply, but will it damage electrical appliances?
- 13. If the voltmeter is connected in parallel with the consumer and power supply, whose voltage is measured by the voltmeter
- 14. The voltmeter should be connected in parallel with the measured appliance,
- 15. The current comes out from the positive pole of the power supply and then goes through the consumer. Is it connected to the positive pole or negative pole of the consumer
- 16. What is the difference between the total power and the output power of the power supply? How to calculate the maximum output power?
- 17. The open circuit voltage and short circuit current of the two terminal network are 10V and 2A respectively When the open circuit voltage of two terminal network is 10V and the short circuit current is 2a, it is equivalent to voltage source and the electromotive force is 0___ 5. The internal resistance is___
- 18. Knowledge network diagram of voltage and resistance I need it urgently Friends, hurry up, OK 5:30 am at the latest
- 19. It is known that R1 = 3 Ω and R2 = 6 Ω are connected in parallel, and the main circuit current is 1.5 A. what is the voltage of each resistor
- 20. A capacitor and a resistor are connected in series on the 220 V AC power supply. It is known that the voltage drop on the resistor is 120 V, so what is the voltage on the capacitor