If the resistors of R,,R, and R, ohms are connected in parallel to make an R- ohm resistor, the value of R can be found from the equation: 1 1 1 1 Find the value of ƏR when R, = 20, R,=40 and = -+ R R R, R, R, = 60 ohms.
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- The diagram in the figure shows a simple circuit consisting of a battery and a load consisting of two resistors.The battery voltage is UB = 56 V and the value of the resistors is:R1 = 1800R2 = 5400a) The ammeters in the circuit show the following value:A1 shows valueA2 shows valueA3 shows valueb) In the load, the effect developsc) The total resistance of the load isDetermine E and P3. Given R1 = 10ohms, R2 = 20ohms, R3 = 60 ohms, R4= 10ohms, R5= 20ohms, R6= 60ohms, R7= 10 ohms, R8= 20 ohms. R9= 30ohms, P6 = 540W.Pt A 6v battey, delivrers loMA to thvee resistors in faralkl, R, =1kr,R2 =2K2,R3=Rx- Calcalate: a) Current in b) Power dissipatiod by Rx and R,-[Anss 6mw, 36mn. c) Resistance ratio Rx/R--(Ans: 6/)- d) Current ratio Ii/Ix. Anst 6/4). Rx stheatis Ix Anss 1 mÁ)
- A dc generator and a battery are connected to a resistive load RL in the figure below. For each, determine the value of RL for maximum power transfer to RL. Next is to determine RL to 75% efficiencyIn an electrical circuit four resistors are connected in parallel and their equivalent resistance is 50ohms. Find the value of each resistors if the currents through each impedance are 0.8, 0.4, 0.6 and 0.2 ampere.150 100 + VA- a -4V AVA -7V 81. B b Figure 2 shows a simplified model of a gas-discharge lamp. One characteristic of these lamps is that they exhibit negative resistance; in other words, as current increases the voltage drops further, making such lamps inherently unstable. As such, a current-limiting ballast is required. For the connection shown in the figure: 1. Find the equivalent Thevenin circuit of the lamp. 2. Find the ballast resistance needed to limit the current drawn from a 24-volt source to 6 amperes.
- Which of the following statements are correct for the circuit below? Thanks to the capacitors I – C1 and C2, the voltage gain of the circuit increases. II – Capacitors C1 and C2 are coupling capacitors and provide an isolation function between AC and DC voltages in the circuit. Thanks to the III – RE resistor, the voltage gain of the circuit increases. Thanks to the IV – RE resistor, the stability of the circuit increases. The V – C3 Capacitor is a bypass capacitor and prevents the loss of voltage gain. Capacitor VI – C3 is a coupling capacitor and has no effect on the voltage gain in the circuit. VII – As the value of the source internal resistance Rs increases, the voltage gain decreases. VIII – The voltage gain decreases as the value of any RL load to be added to the circuit increasesthe adjoining figure. This lamp can withstand a maximum voltage 3.0 v 0.4 9. Volt-ampere (V-I) charaeteristics of an incandescent lamp 16thd in and a maximum current 0.4 A. An infinite ladder network consisting a large number of these lamps is also shown in the figure given belo How much maximum voltage can be applied between the terminals A and B, so that no lamp gets damaged? (Use V5 = 2.2). Ans:x4.2V Hint: Curentin all bulls except first isdhjdhjhdjdhjfhfjdbfejfheidadadisfdfodf,fdhjfhdfj The equivalent resistance of three resistors A, B and C connected in parallel is 1.5 ohms. If A is thrice of B and C is 1/4 of B. Find the equivalent resistance when the three of them are connected in series? dhsfhfeirwdiwudwiwuiThree resistors of 50 N, 100 N and an unknown resistance R are connected in parallel and the combination is connected to a 25 V source. If the total current delivered by the source is 1 A, determine the following: A. The value of R (Ans. R = 100 2) B. The current in each resistor (Ans. I1 = 0.5 A, I2 = I3 = 0.25 A) C. Which resistor dissipates the highest power? Show your solution. (Ans. R1)Plz do your own solution don't copy from others . show the solution with details plz.Q6 Given: R₁ R₁ R₂ R3 - 1190 (Ohm) Find the equivalent resistance Req. REQ = ?? Q (Ohm) R₂ == 108 02 (Ohm) R3 = 5968 2 (Ohm)SEE MORE QUESTIONS