Is 5wr22j a 5w22 ohm resistor? Is the resistance 5w22 ohm?

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• 1. What's the resistance of 24 ~ 27 ohm 5W? How to distinguish the resistance from W?
• 2. What is the ohm of resistance 5W r015j?
• 3. In the home circuit, the filament resistance of an incandescent lamp is 484 ohm when it normally emits light In the home circuit, the filament resistance of an incandescent lamp is 484 ohm when it normally lights up. How much power is consumed by the lamp when it normally lights up for one hour? How much kwh is consumed?
• 4. How many kilowatts can 4 square copper core line bear
• 5. What is the resistance of a copper wire with a length of 1m and a cross section of 1mm
• 6. Why can't fuses be replaced by copper wire, aluminum wire or iron wire? extra urgent
• 7. A small bulb marked with "2.5V & nbsp; & nbsp; 0.5W" must be connected in series with a large resistor in order to connect it to a 6V power supply for normal lighting?
• 8. The electromotive force of the power supply is e = 30V, the internal resistance is r = 1 ohm, and the coil resistance of the DC motor is r = 2 ohm. If the reading of the ideal ammeter is 2a, the voltage at both ends of the motor? The output power of the motor? (motor and er in series)
• 9. The magnetic flux through a single turn coil with a resistance of 1 ohm changes: it decreases evenly in T1 time per second, and it decreases evenly in T2 time per second When the magnetic flux through a single turn coil with a resistance of 1 ohm changes: in T1 time, it decreases uniformly every second, and in T2 time, it increases uniformly every second, then the average value of the induced electromotive force generated in the coil must be zero in (T1 + T2) time. Why is it right? Let's not say that T1 = T2
• 10. As shown in the figure, the coil with area s, number of turns n, resistance R and resistance R form a closed loop. The ideal AC voltmeter is connected in parallel at both ends of resistance R. the coil rotates uniformly at an angular velocity ω around the rotation axis perpendicular to the magnetic field in a uniform magnetic field with magnetic induction intensity B. suppose the time when the coil rotates to the position shown in the figure t = 0 A. When t = 0, the coil is in the neutral plane, the current flowing through the resistance R is 0, and the reading of the voltmeter is 0b. Within 1 second, the direction of the current flowing through the resistance R changes ω π times C. after connecting another resistance at both ends of the resistance R, the reading of the voltmeter will decrease D After a capacitor with larger capacitance is paralleled at both ends of the resistance R, the reading of the voltmeter will not change, and the signal processing system will count every time it gets a high voltage
• 11. How many ohms are the chip resistors 102, 12 and 5R1 The resistance is burnt. I want to change it,
• 12. Use an ohmmeter to measure the resistance value of a resistance R, set the selection knob at "× 10" position, and the pointer is in the middle of the 100 and 200 scale arc lines when measuring A. R=150ΩB. R=1500ΩC. 1000Ω＜R＜1500ΩD. 1500Ω＜R＜2000Ω
• 13. Two bulbs are connected in parallel in the circuit, the resistance of 3vl1 is 20 ohm, and the resistance of L2 is 10 ohm. Calculate the current of circuit 2 of 1 bulb L1 and L2
• 14. The rated power of a motor is 4.4kw, the rated voltage is 220kV, and the resistance of the power supply line is 1.8ohm How many watts of power is consumed on the circuit when the motor works normally?
• 15. There are three resistors marked with 100 ohm 4W 12.5 ohm 8W 90 ohm 100W respectively. The maximum voltage allowed to be added when they are connected in series is () v. they are allowed to be added when they are connected in parallel
• 16. When repairing an electrical appliance, you need a 4.5 ohm resistor. Now there are 2 1 ohm resistors, 4 9 ohm resistors, and 2 4 ohm resistors. What can you do
• 17. The ratio of power consumption is () A.2:1 B.1:2 C.4:1 D:1:4
• 18. There is a bulb with rated power of 100w220 V, and the resistance of the wire is 2.42 ohm. How much is the actual power of the bulb
• 19. When the voltage at both ends of a resistor is 6, its resistance is 20 ohm. When the voltage at both ends of the resistor becomes 0 V, how many ohm is its resistance? When it becomes a superconductor at ultra-low temperature, how many ohm is its resistance
• 20. Add 3V to a 1 ohm resistor, and I =? P =? If the maximum power of the resistor is 25W, how much voltage can it bear If it works in a circuit with 15V input, 5V output and 3a current, can it work?