Given the circuit below where a battery with EMF 12 V and internal resistance 2 ohms is energizing a 4-ohm resistor, what will be the voltage V-h? a b + 12 V a' b'
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KVL and KCL
KVL stands for Kirchhoff voltage law. KVL states that the total voltage drops around the loop in any closed electric circuit is equal to the sum of total voltage drop in the same closed loop.
Sign Convention
Science and technology incorporate some ideas and techniques of their own to understand a system skilfully and easily. These techniques are called conventions. For example: Sign conventions of mirrors are used to understand the phenomenon of reflection and refraction in an easier way.
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- answer as soon C) Figure Q2(c) shows a simple electronic circuit. A recently graduated engineering student from eau has been tasked by his Senior Engineer to determine the equivalent circuit between Terminal A and B. Please help him to analyze and find the equivalent resistance using delta-wye transformationlell L1 R Ro 2. In this figure, assume arbitrary numbers for R1, R2, L1, and L2 including some number for the battery E. Find the rate of current in which inductor one (L1) is changing just after the switch is closed. Next, find the current in L1 after some time after the switch has been closed. lellExe: The single-phase bridge rectifier has an RL Load and an ac source, with R = 10Ω andL = 10mH. The peak value of the source is Vm = 100V at 60 Hz. The expressions of voltage andcurrent outputs are:(a) Determine v0(t) and i0(t) with two ac terms (n=2 and 4)(b) Determine the power absorbed by the load.
- Use the following constants if necessary. Coulomb constant, k = 8.987 x 10° N - m² /C2. Vacuum permitivity, co = 8.854 x 10 12 F/m. Magnetic Permeability of vacuum, Ho = 12.566370614356 x 10-' H/m. Magnitude of the Charge of one electron, e = -1.60217662 × 10–19 C. Mass of one electron, me = 9.10938356 x 10 31 kg. Unless specified otherwise, each symbol carries their usual meaning. For example, µC means micro coulomb. a R5 R3 e R9 R, R6 R8 Ry K Suppose you have the following circuit diagram. Here R1 =1.1 kN, R2 = 3.3 kN, R3 = 2.2 kN, R4 = 22 kN, R5 = 22 kN, Rg = 11 kN, R7 = 11 kN, Rg = 11 kN, R9 = 1.1 kN are the resistances on the circuit where kN stands for kilo ohm. The electromotive forces of the batteries are & = 5 volts and Ez = 3 volts. a) Calculate Rik. the resistance equivalent to R5, Re, R7, Rg and R9 between the terminals b and k. Value of Rhk Give your answer to at least two significance digits. Ω b) Calculate the current through R1.In the figure is shown a battery having an emf of 12 Volts and an internal resistance of 0.40 Ohm.A resistor R1 of 2.6 Ohms is connected across itsterminals ab. Determine (a) resistance of Rwhich, when connected across terminals ab inparallel with R1 will make the powerdelivered by the battery a maximum; (b)current in R1 and R; (c) terminal voltage ofbattery; (d) power in R1 and in R; (e) power lost in batteryHint: To maximize power in R, use differentiation In the circuit shown, a 6-Ohm resistor connected in series to a parallel combination of tworesistors, one is 30-Ohm and the other is R beingunknown. Determine the value of R if: (a) thepower dissipated in 6-Ohm resistor is equal tothe power in the parallel combination; (b) hepower in 6-Ohm is equal to the power of in R; (c)value of R maximum power transfer.Hint: To maximize power in R, use differentiationQUESTION 2 a) b) Figure Q2a shows a parallel clipper circuit. Analyze the circuit and hence sketch the output waveform for one complete cycle of the input. R own V₁ 10 Vi (V) A -20 15- -15 t(s) t(s) Figure Q2a Determine the output voltage, V, and hence sketch the output voltage waveform for the clamper circuit shown in Figure Q2b. C Figure Q2b Si Si 5 V 3V V₂ R Vo
- 2.2 QUESTIONS ON THIS CHAPTER b.) c.) To forward bias a P-N junction you must : ol 02 □3 04 05 5 To reverse bias a P-N junction you must: ol 02 03 a 2 @ 3 04 05 LESSON B02: THE P-N JUNCTION What is the most evident effect in a forward biased P-N junction? al the current is zero □ 2 @ 3 apply a negative voltage to the P region, and set the N to ground apply a positive voltage to the N region, setting the P to ground apply a positive voltage to the N region and a negative to the P apply a positive voltage to the P region respect to the N region none of the above 04 05 apply a positive voltage between the P region and the N region apply a positive voltage to the P region, setting the N to ground apply a positive voltage to the N region respect to the P regiom apply a negative voltage to the N, setting the P to ground none of the above In a reverse biased P-N junction what is the most evident effect? ol the current is zero exponentially increases the Zener effect the avalanche effect none…In the figure the current in resistance 6 is i = 1.43 A and the resistances are R₁ = R₂ = R3 = 1.68 2, R₂ = 15.1 Q2, R5 = 7.41 Q2, and R6 = 4.57 2. What is the emf of the ideal battery? E www R₁ O a. 25.7V O b. 52.3 V O C. 47.2 V O d. 21.4 V O e. 6.54 V R3 www R₂ www R₁ R₂ 16 R6Problem No.2 group Six group of batteries are in parallel. Each has 10 cells connected in series, each has an internal emf of GV and resistance fo 0.412. a. Determine the equivalent emf and the internal resistance of the battery system.. b. If a 1-kn load resistor is connected to the battery system, what is the power dissipated to this load venistor? c. In & hre operation, determine the total energy delivered source to the 1-ks load resistor. the by
- A potentiometer consisting of a wire of length L0 has a source of emf, ɛ connected across it. When a standard cell with emf V = 6V, in series with a voltmeter, is connected at one end of the wire and at a distance L = 4 cm along the wire the voltmeter circuit is in balance and the voltmeter reads zero. When the standard cell is replaced by a source of unknown emf the new balance length is found to be 6 cm. What is the unknown emf? Select one: a. 9 V b. 8 V c. 4 V d. 3 VAn aluminum wire 7.5 m long is connected in parallel with a copper wire 6 m long. When a current of 5 A is passed through the combination it is found that the current in aluminum wire is 3 A. The diameter of aluminum wire is 1 mm. Determine the diameter of the copper wire. Resistivity of copper is 1.7 x 10 “ ohm-cm and that of aluminum is 1.724 micro-ohm-cm.ÞİSLİK FAKÜLTESİ / Elektrik Elektronik Mühendisliği (İngilizce) / E2E242_Electronics L1 / 10 Nisan - 16 Nisan BE3 E Vx % In the circuit above, plot Ix and IR1 as a function of Vx for two cases: VB = -1.25V and VB = +1.5V. (D is an ideal Diode!) (Upload your answer ) $$ @ R1 RIVER₁VB D₁7 Ideal R₂ 4