What is the relationship between current to voltage ratio, resistance to power ratio in series parallel circuit?

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• 3. As shown in the figure, the graph of the function f (x) defined on [- 1, + ∞) consists of a line segment and a part of a parabola, then the analytic expression of F (x) is______ ．
• 4. For some primary school fifth grade answers Write three fractions of the same size as 16 out of 40 Fill in the simplest fraction in brackets 600 kg = [] t 90 points = [] 75cm = [] m 65 ml = [] l 30m=【 】km 450g=【 】kg Training homework: divide a score into two parts, three parts and five parts. The final result is two-thirds. What is the original score? Crab crab help!
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• 10. There are 40 tons of cement on the construction site, two fifths of which are used in the first day, and six fifths of which are used in the second day. How many tons of cement are used in each of the two days
• 11. What is power W equal to
• 12. How many watts is 1p equal to
• 13. The method of measuring resistance with voltmeter and ammeter is called voltammetry. Its principle is as follows_____ . In the experiment of measuring resistance by voltammetry, the function of sliding rheostat is______________ Change the current in the measured conductor and the voltage at both ends three times in order to____________
• 14. It is known that R1: R2 = 1:2. When resistor R1 and R2 are in parallel, what is the ratio of electric power P1: P2? When resistor R1 and R2 are in series, the ratio of heat Q1: Q2 =?
• 15. When a bulb marked pz220-40 is connected to a 110 volt circuit, the actual power consumed by the bulb is
• 16. A kilowatt hour is a kilowatt. Do you need the next kilowatt hour
• 17. What is the specific resistance value of "1K", "100", "10" and "1" in ohmmeter? Is it that the resistance value is small when the number of blocks is large? It's not about how to calculate in use, but about the internal structure of the ohmmeter Is the internal ohmmeter equivalent to an ammeter or a voltmeter? If it is an ammeter, then its full bias current I should be constant no matter in which gear. In this way, the full bias current multiplied by the resistance value of different gears is the total voltage. If the resistance value of each gear is different, then the total voltage is also different. This is definitely not right. What's the situation?
• 18. 11. A voltmeter is composed of ammeter g and resistor R in series, as shown in the figure. If it is found that the reading of this voltmeter is always a little smaller than the accurate value in use, take 11. A voltmeter is composed of ammeter g and resistor R in series, as shown in the figure. If it is found that the reading of this voltmeter is smaller than the accurate value, which of the following measures can be adopted to improve it A. A resistor much smaller than R is connected in series with R B. A resistor much larger than R is connected in series with R C. Parallel a much smaller resistor to R D. Parallel a much larger resistor to R
• 19. The function of resistance and capacitance Resistance and capacitance introduction, resistance type classification, resistance basic circuit What are resistance and capacitance? Where are the different places?
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