Mesh current methods can greatly reduce the calculations as compared to Kirchhoff’s voltage and current laws in circuits with multiple branches. Refer to the textbook reading and the lecture for this week to answer the following post. Describe, step-by-step, the steps required to calculate all currents and voltage drops in a DC network using the Mesh Current Method.

A variable resistor enables one to change the resistance. One design involves a horizontal tube of wire with a slider on the top. By moving the slider, one can change the length of wire involved, thus changing the resistance. Imagine a tube of wire with one layer made from wire 1.00 mm in diameter wrapped in a single layer with no gaps between the loops of wire ( the wire looks like a solid layer down the length of the tube). The radius of the tube is 2.50 cm. Moving the slider 1.00 cm changes the resistance of the variable resistor by 3.00 Ohms. What is the resistivity of the wire, and what is it made of?

(a) defibrillator sends a 6 A current through the chest of a patient by applying a 11000 V potential as in the figure. What is the resistance of the path (through the wire and the body)? -aira R= (b) The defibrillator paddles make contact with the patient through a conducting gel that greatly reduces the path resistance. To understand the importance of using the gel, discuss the difficulties that would ensue if a larger voltage were used to produce the same current through the patient, but with the path having perhaps 50 times the resistance by finding the ratio, P no-gel P gel e- ΚΩ (Hint: The current must be about the same, so a higher voltage would imply greater power. Use this equation for power: P = PR.) What difficulties arise when no gel is used? a. The voltage is too high for the human body even when the current is the same. b. There is a risk of skin burns because of the high power deposited.

A particular wire has a resistance of 25 Ohms. If we place an identical wire next to the first, so that they are parallel and side-by-side, so that the area of the combination of wires is twice that of the single wire. What is the resistance of the two wires in parallel. (Hint: You could treat the two wires as parallel resistors...) You may ignore significant figures. O 50 Ohms O 12.5 Ohms O 37.5 Ohms 100 Ohms

What is the DC equivalent circuit?

Q2: A Cockcroft-Walton type voltage multiplier has ten stages with capacitances, all equal to 1.5 μF. The supply transformer secondary voltage is 800 kV at a frequency of 50 Hz. If the load current to be supplied is 8 mA, find (a) the percentage ripple, (b) the regulation, and (c) the optimum number of stages for minimum regulation or voltage drop.

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2.43 Suppose a 12-V voltage source is connected between nodes A and B of the circuit of Figure P2.14, with the posi- tive side at A. Find the magnitude and polarity of the voltage appearing between C and D, as well as the power supplied by the source.

You have developed an idea for using a poly Si surface‐ micromachined cantilever. Initially, you designed a process flow for creating this simple structure, and the process flow is detailed in the figure below. ( cross section view and top view)There are several critical errors with this process (things that won’t work or won’t produce the result). Please find the critical errors in this process flow and, where possible, suggest alternate approaches. Do not worry about the accumulation of errors, but rather treat each step assuming that the structure up to that step could be created.This structure is actually quite simple to make. Develop a simpler process flow and associated masks to create the final structure. Be sure to show cross‐sectional and planar views of all key steps in the process.

20 What is countertorque a measure of? PRACTICAL APPLICATIONS ou are working as an electrician in a large steel manufacturing plant, and Y in the of doing preventive maintenance on a large DC you are generator. You have megged both the series and shunt field windings and found that each has over 10 M2 to ground. Your ohmmeter, however, indicates a resistance of 1.5 2 across terminals S, and S,. The ohmmeter indicates a resistance of 225 N between terminals F, and F2. Are these readings normal for this type machine, or is there a likely problem? Explain your answer. process

can someone help me with this problem and show your work step by step

How to do using variation parameter method ?

1. Passive voltage response to injected current step is not instantaneous, why not? Key words: time constant, resistance/capacitance properties