9. As shown in the figure, an electrified straight wire is vertically placed in a uniform magnetic field with magnetic induction intensity of 1t, and there are a and B on the circle with radius r centered on the wire There is a picture in this question. The elder brother and elder sister will ask me to pass the picture to you

The actual magnetic induction intensity of point C is zero, which is the vector sum of the magnetic induction intensity of the linear current at point C and the magnetic induction intensity of the uniform magnetic field at this point is zero, so the direction of the linear current at point C is to the left. According to the ampere rule, the direction of the current in the straight wire is perpendicular to the paper surface and inward
The charger voltage is 220 V ~ 50 Hz / 9 W, and the output is 12 V d.c/5 W. what is the capacity of the battery
I don't know the capacity of the battery
The capacity of the battery has a special parameter ma. H
An electric furnace is marked with the words "220V, 1000W"
It means that the current of the electric furnace at 220 V is? A, the work done by the current within 1 min is? J, and the electric energy is 1kW · h. However, it works continuously for? H. If the voltage applied to the electric furnace is 100 V, the current through the electric furnace is? A, the actual power is? A, and the rated power is? A?
Write a detailed solution. The question mark is the answer
4.545、60000、1、2.066、206.6W、1000W
220 V is the normal working voltage of electric furnace. 1000 W is the power of electric furnace under this voltage
The magnetic induction of a uniform magnetic field parallel to the right of the paper surface is 1 T. the straight wire with length of L = 1 m has a constant current of I = 1 A. the wire is parallel to the paper surface and forms a line with B1
When the conductor is placed perpendicular to the paper, the ampere force can be measured as 2n. Try to find the magnitude and direction of the magnetic induction intensity of another uniform magnetic field in this area
The size is 5 ^ (1 / 2) t, and the direction is at an angle with B1. A = arctan2 is inclined downward. According to the left-handed rule, the ampere force received by the wire in the magnetic field B1 is f = B1 * I * L * sin60 = 3 ^ (1 / 2) / 2, which is received in B2. The orthogonal decomposition of the wire and B2 is shown in the figure. From the ampere force F2 = 2n = L * I * B2 (min), B2 (min) = 2T can be obtained. If there is any error, you can point out···
I have a power failure at night. I use 6000W per hour for 7 hours at night. How many batteries do I need? How big is the inverter? I use 220V
6000 * 7 = 42000w if you use a 96 V inverter, you need 16 groups of 12 V 200ah batteries in parallel, which can only take less than 6 hours
An electric furnace marked with "220V, 1000W" is connected to the 220V power supply, which can work for 0.5 hours and consume electric energy______ Degree
If the power of electric furnace in normal operation is p = 1000W = 1kW, the electric energy consumed in 0.5h operation is w = Pt = 1kW × 0.5h = 0.5KW · H = 0.5 degree
In the uniform magnetic field with magnetic induction of 1t, there is a 10 cm long wire perpendicular to the magnetic field. When the wire passes through 0.5 a current, the ampere force on the wire is 0.5 a__ V
F=ILB=0.5A×0.1m×1T=0.05N
When the current direction is perpendicular to the magnetic field direction, the ampere force F = bil = 1 x 0.5 x 0.1 = 0.05 n
The unit on the question is wrong
How long can you hold the 48V battery of electric vehicle with 500W inverter to 220V?
How long can I hold a 48V 20A battery of an electric car with a 500W inverter to 220V? For example, how long can I use an 18.5v 65W notebook or a 500W electric appliance?
The total power of your electric vehicle battery is 48vx20a = 960W, which is the total power. How long can it last when you use a 500W inverter to turn to 220V? This is related to the load you use. You can use a 65W laptop for about the following time: the power consumption of a general laptop is about 40W, 960W / 40W = 24 hours, It should be pointed out that the 500W inverter will consume part of the electric energy when it works, so it can only be used for about 22 hours. The time of using a 500W electric appliance is only 960W / 500 = 1.9 hours
A certain electrical appliance is marked with the words of 220 V and 800 W. what does 220 V mean? What does 800 w mean?
An electric appliance is marked with the words of 220 V and 800 W, in which 220 V is the rated voltage of the appliance and 800 W is the rated power under the rated voltage
220 V is 220 V, 800 W is 800 W
220 V is the rated voltage and 800 W is the rated power
220 V is the rated input voltage of the appliance
The rated power of the appliance is 800W
The smooth U-shaped guide rail placed vertically has a width of 0.5m, regardless of the resistance. It is placed in a large uniform magnetic field with a magnetic induction of 1t, and the magnetic field is perpendicular to the plane of the guide rail. As shown in the figure, the metal rod PQ with a mass of 10G and a resistance of 1 Ω slides close to the guide rail (always in a horizontal position) after no initial velocity release (1) How high does the PQ drop when the power passing through the PQ reaches 0.2C? (2) If PQ just reaches the maximum speed at this time, what is the speed? (3) How much heat is generated by the above process?
(1) From the electric quantity Q = △ Φ & nbsp; r = B △ sR = blhr, the solution is: H = qrbl = 0.2 × 11 × 0.5m = 0.4m. (2) when ampere force equals gravity, PQ has the maximum velocity, that is: b2l2vr = mg, and the solution is: v = mgrb2l2 = 10 × 10 − 3 × 10 × 112 × 0.52m/s = 0.4m/s. (3) according to the law of conservation of energy, the heat produced by

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