Why is it that the higher the rated power, the smaller the resistance of the consumers with the same rated voltage and different rated power in the series circuit, On the contrary, the smaller the rated power is, the greater the resistance is? What about parallel circuits?

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• 1. The rated power is 900W, the voltage is 220V, and the time is 100 hours?
• 2. There is a 500 ohm resistor with a rated power of 5W. What is the voltage and current at both ends of the resistor?
• 3. Function of series resistance between capacitor and resistance Capacitors are connected in series in the circuit. Shouldn't this branch be an open circuit? Then why is there a current passing through to charge it, and the two ends of the resistor connected in series are not divided?
• 4. Circuit diagram of series circuit and parallel circuit, current, voltage, resistance, distribution of voltage and current, electric power and electric power,
• 5. In the circuit shown in the figure, r = 10 Ω, the power supply voltage remains unchanged. When a resistor with R1 = 30 Ω is connected in series in the circuit, the current representation is I1 = 0.25A. (1) calculate the power supply voltage? (2) How to connect the resistor in the figure if I2 = 1.2A? What is the resistance?
• 6. The total resistance after series connection is two resistors of 10 ohm. When the maximum resistance is possible after parallel connection Give a certain solution process or ideas Maximum total resistance
• 7. Calculate the electricity charge of the refrigerator. The information is that the total input power is 103w and the power consumption is 1.0kw · H / 24h. How much electricity does my refrigerator use per month? The information on the back of the refrigerator is: rated voltage: 220 V, rated frequency: 50 Hz, total input power: 103 W, power consumption: 1.0 kW · H / 24 h. how much electricity does my refrigerator use per month?
• 8. A and B lamps marked with "pz220 40" and "pz220 60" are connected in series in the home circuit (with filament resistance unchanged). After the circuit is connected, the actual power of B lamp is equal to its rated power______ Times. (results retain two significant digits)
• 9. The electric power of resistance R1 is P1, and resistance R2 and R! Are connected in series in the same circuit. The electric power of R2 is P2. It is known that P1: P2 = 36:5, and R1 > R2, then R1: R2 =? The electric power of resistance R1 is P1, and resistance R2 and R! Are connected in series to the same circuit. The electric power of R2 is P2. It is known that P1: P2 = 36:5, and R1 > R2, then R1: R2 =?
• 10. When an ammeter is refitted into a voltmeter, how much resistance should be connected in series? For example: the internal resistance of an ammeter is 25 Ohm. When the current is 2mA, its pointer deflects 1 degree. When it is used as a voltmeter, how much resistance is in series to deflect 1 degree to represent 1V?
• 11. The rated power of an electric furnace is 1.1KW, and the rated voltage is 220V. When it is connected to a certain circuit, the measured current passing through it is 4A? As shown in the title Ask: (1) what is the resistance of the furnace? (2) what is the actual power of the furnace?
• 12. The positions of rational numbers a, B and C on the number axis are shown in the figure below, which is simplified as follows: | a + C | + | C-B | - | b-a| ——a——b———0—c——
• 13. It is known that in RT △ ABC, ∠ C = 90 °, AC = 12, BC = 16. First, fold an acute angle so that the vertex of the acute angle falls at the midpoint D of the opposite side, and the crease intersects the other right edge at e and the oblique edge at F. then can we draw a graph of the tangent value of ∠ CDE
• 14. Area problem of space vector 1, a = (1,0,3) B = (- 1,0,2) calculate the area of the enclosed parallelogram 2, the equation of the plane parallel to the parallelogram and passing through the point (0,0,1) Sorry, it is a=(1,1,1) b=(-1,0,2)
• 15. If the average of sample x1, X2, X3 is 2 and the variance is 3, then the average of sample 2x1 + 1,2x2 + 2,2x3 + 1 is (), and the variance is ()
• 16. In the sequence an, A1 = 1, an + 1 = 2An + 2 ^ n, 1. Let BN = an / 2 ^ n-1. Prove that the sequence BN is an arithmetic sequence; can we not use the same division 2 ^ (n + 1) I mean to use the construction method to make a (n + 1) + k = 2 (an + k), but I use this method to find an = 3 * 2 ^ (n-1) - 2 ^ n, which is different from Baidu
• 17. Let f (x) = 1 + SiNx / X and point out the discontinuity of F (x) F (x) = 2, x = 0, how to calculate 2 here, please explain in detail
• 18. The Quasilinear equation of parabola x2 = y is______ ．
• 19. The Quasilinear equation of parabola x2 = y is______ ．
• 20. What is the Quasilinear equation of parabola y = - 1 / 8 * x ^ 2 To solve the problem process