SOLVE THE FOLLOWING PROBLEMSs COMPLETELY. 1. The series combination of a 4-ohm resistor and a variable resistor R is connected in parallel with a 20-ohm resistor across a 110 V source. Determine the minimum value of R if the power of R is equal to the power taken by the 4-ohm resistor.

Q: voltmeter

A: Resistance in parallel- 1Req=1R1+1R2+1R3+........... Resistance in series- Req=R1+R2+R3+...........

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Q: Consider four resistors in parallel connection: R1 = 3520.45 Q, R2 = 33.09 Q, R3 = 1484.22 Q and R4…

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Q: R; = 12 R = 6 R, = 8 ŽR; = 4 Rs = 4 Re = 2 20 V R2 = 10

A: Calculate: Req, total current, and current through 2 ohm resistor

Q: In the figure the current in resistance 6 is i6 = 1.33 A and the resistances are R₁ = R₂ = R3 = 1.56…

A: According to the question, for the given circuitWe need to find emf of the battery.

Q: E www R

A: We need to find out voltage across resistor for given circuit .

Q: Three parallel resistors 19, 15.6, and 10 Ohms are connected to a dc source 82 V. What is the…

A: Given: The three parallel resistors are R1=19 ΩR2=15.6 ΩR3=10 Ω DC source, V=82 V

Q: Use the mesh-current method to find the pha- sor current I in the circuit shown. 1Ω j2 Ω Σ3Ω 20 0.75…

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Q: what is the equivalent resistance Rab

A: This question belongs to circuit theory . It is about calculation of equivalent resistance of the…

Q: 1. On a single V-I plot, plot the current through the following resistors as a function of voltage.…

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Q: Consider three resistors in the figure: R1 = 29.270, R2 = 33.090, R3 = 42.972 and R4 = 3.60. What is…

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Q: Find all the missing quantities. Show your work. Determine the total resistance for the circuit.

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Q: For Class-C commutator shown below, peak value of current from Thyristor T2 is Amp. 100V + A 2.5 B…

A: Given: Class-C commutator circuit, From the above circuit, R1=50 ΩR2=100 ΩVs=100 V

Q: Write down the steps on how to Series Resistors Voltage Division

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Power Measurement

According to Blondel's theorem, the total power is measured with one less number of wattmeters than the number of wires present in the system. So, a single-phase and two-wire system will require one wattmeter and a single-phase and the three-wire system will require two wattmeters, and a three-phase and the three-wire system will also require two wattmeters and a three-phase and the four-wire system will require three wattmeter devices. The wattmeter is a device that measures power using one voltage and one current input as shown in the above figure. Multiple current or voltage input pair cables are used by many power analyzers and digital storage oscilloscopes (DSOs) for measuring watts, in effect within a single instrument acting as multiple wattmeters. It is possible to measure three-phase and four-wire power with one correctly specified power analyzer.