Unit 4 Week 4 Guided Practice Student_New

Three 47.1 ohm resistors and three 17.1 H inductors are all in series with a 37 volt battery and a switch. The switch is placed in position A at time t = 0 and switched to position B at time t = 743 ms. Find the voltage across each of the resistors at time t = 1.17 seconds. Owo DO A R R in in ete SW éte لفظو

Given the following Resistances and Inductors in Series and Voltage Source: R1 = 74 ohms R2 = 69 ohms L1 = 4 Henry %3D L2 = 5 Henry %3D Vs = 169 Volts Frequency = 98 Hz What is the Amplitude of the voltage across R1?

Solve the following problem and show compete solution.

Question: A battery is charged from a constant dc source of 220 V through a chopper. The dc battery is to be charged from its internal emf of 90 V to 122 v. The battery has an internal resistance of 1 ohm for a constant charging current of 10 A. What is the range of duty сycle? Option 1: 0.55 to 0.7 Option 2: 0.2 to 0.4 Option 3: 0.45 to 0.6 Option 4: 0.3 to 0.5

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SUBJECT: FUNDAMENTALS OF CIRCUITSPLEASE PROVIDE A CLEAR SOLUTION AND COMPLETE ANSWER FOR THE QUESTION ON THE PICTURE.

1. Discuss your observations on both series and parallel circuit. (Brightness of light bulb) 2. Briefly discuss the differences of series and parallel circuit based on current, voltage, and resistance.  3. Do batteries last longer in series or parallel?  4. What is Electricity?  5. How do electrons move from one atom to another?  6. Discuss the difference between direct current and alternating current?  7. What is circuit?  8. What is the purpose of a switch?  9. What do you this is life without electricity?

A copper wire is having a resistance of 10Q at 20C° and 10.40 at 30C°. Then it's temperature coefficient is equal to 1mQ/C° 4mQ/C° 0.040/C° None of the above

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Question 4 Three 47.1 ohm resistors and three 17.1 H inductors are all in series with a 37 volt battery and a switch. The switch is placed in position A at time t-O and switched to position B at time t - 743 ms. Find the voltage across each of the resistors at time t = 1.17 seconds. 븐 Bo loa R ete SW éte لعطو

How much is the current, I, at each of the following points? a. Point A b. Point B c. Point C d. Point D e. Point E f. Point F, in the cireuit below? R, = 10 N E F Applied voltage V, R = 20 N A 100 mA B C R = 30 N

2. A wire carries a current i 3cos314t A. What is the average current over 6 seconds?

A current of -4 + 3√√2 sin(wt +30°) A is passed through a center zero PMMC meter and a moving Iron meter. The two meters will read respectively?

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Please answer the first question. Not the dotted one. Thanks

Circle the right answer(s): The renewable sources that provide 24/7 and 365 days of electricity are/is: Nuclear Energy Wave Energy Geothermal Energy Ocean Energy Hydro electrical Energy Wind Energy

Using the BJT small-signal model given in Figure 2, determine the AC current gain A = lout/in for the circuit given in Figure 3. Assume r, >> rr. You may assume that B is large.

Try to do calculation based on the value given and   Find value of ammeter for each resistor   Second, find the value of voltmeter for led and ldr   please answer in print font to copy it and paste it

Answer quickly using type

Nichrome ribbon resistor elements each has a resistance of 1 ohm. The element is made from sheet of nichrome alloy, 0.025 cm thick. If the width of the ribbon is 0.3 cm, what length is required per element? [centimeters, 1 decimal place]

(b) Solve the circuit in Figure Q2(b) at terminal a-b using Thevenin's Theorem. i) Analyze the circuit and calculate the Thevenin equivalent resistance, R™h. ii) Find the Thevenin equivalent voltage, VTh.

Question 1: If the current is 1.07 mA at an applied voltage of 606 mV, and the current is 4.05 mA at an applied voltage of 640 mV, what is the ideality factor? You can assume that the thermal voltage is 0.0259V. Answer should be to three significant digits with fixed point notation. Correct Answer: 0.986

4.-For-labeled currents, draw an arrow to show the direction of the actual positive current. For labeled voltages, circle the node that is at the actual highest potential. Note that the positive and negative signs of the voltage represent the polarity of the probes of a voltmeter connected to the device. The value shown is the reading on the voltmeter. (segment of wire) 2A -2A -5A 2.de 3A TA Cov E 5V 12V + 3V -10V -201

d. is a minimum working voltage 79. Which of the following formulas can be used with Ohm's law to determine the amount of voltage necessary to pu ampere of current through ohms of resistance? a. E=IX R E = 0.8 AX 6 E = 4.8 V b. C. d. X₁ = 2 π fL E XL X₁₂=X₁₁+X₁₂+X₁₁ |=

7. A 100 W incandescent lamp has a resistance when cold (lamp extinguished) that is only 1/12 of its hot (lamp illuminated) resistance value. a) What is the lamp current and its hot resistance when placed across a 120 V line? b) What is the cold resistance of this lamp? c) What is the instantaneous current through the lamp at the moment it is switched on? d) What power does the lamp dissipate at this instant?

49 When 7A current is flowing in electric circuit then the electric potential difference between B B and C will be. volt. 7A A ww 492 1092 www wwwww 292 502 wwwww 7A (A) 16 (C) 8 (B) 10 (D) 5

A coil 4.40 cm in radius, containing 460 turns, is placed in a uniform magnetic field that varies with time according to B=( 1.20x10-2 T/s)t+(2.95x10-5 T/s4 )t¹. The coil is connected to a 680 2 resistor, and its plane is perpendicular to the magnetic field. You can ignore the resistance of the coil.

A moving iron voltmeter reads 250v when connected to 250v dc .if connected to 250v 50 Hz.the voltmeter reading is likely to be O 248 O 252 o 250 O 210

Which basic law should be followed to analyse the circuit? * a. Newton's law b. Faraday's law C. Amperes law d. Kirchoff's law

The meter constant of a single phase 230 V induction watt hour meter is 400 rev/kWh. The speed of the meter disc for a current of 10 A of 0.9 pf lagging will be ?

Constants In (Figure 1), R1 = 6.00 N, R2 = 7.00 N, and R3 = 4.00 N. The battery has negligible internal resistance. The current I2 through R2 is 5.00 A. Part A What is the current I1 through Rị? Express your answer with the appropriate units. Figure 1 of 1 > μΑ I = Value Units R1 Submit Request Answer R2 Part B R3 What is the current I3 through R3? Express your answer with the appropriate units.