CAS PY 212 Study Guide - Arab Bank For Economic Development In Africa, Net Force, Cross Product

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chocolatecricket169

27 Oct 2014

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Consider the circuit shown in the figure, where all resistors have the same resistance r. Solution: (i) at t = 0, the capacitor is uncharged and so there is no voltage difference across it. The capacitor is a short, and so a simpler circuit can be drawn just by eliminating the capacitor. In this simpler circuit, the two resistors on the right are in parallel with each other, and then in series with the resistor by the switch. The current through the resistor by the switch splits equally when it reaches the junction of the parallel resistors. 3 t = the capacitor will be fully charged and there will be no current in the branch containing the capacitor, and so a simpler circuit can be drawn by eliminating that branch. In this simpler circuit, the two resistors are in series, and they both have the same current.

Related Questions

You are given two resistors, an ammeter, a voltmeter, and a voltagesource. By connecting each resistor singly to the voltage sourceand taking voltage difference and current measurements on thesingle resistor, you find the following data for eachresistor:

Resistor Voltage (V) Current (mA)
1 4.5 30.2
2 3.72 9.3

Using this data, first find the resistance of each resistor andthen calculate the following:

(a) The current that would pass through the network of resistors ifthey were arranged in series and connected to an 8.7 V voltagesource.
I series =

(b) The current through the circuit if the resistors were arrangedin parallel and connected to the same 8.7 V source from part(a).
I parallel =

Two 9.4 Ω resistors are connected in parallel, asare two 4.7 Ω resistors. These two combinations are thenconnected in series in a circuit with a 12Vbattery.
What is the current in each resistor and what isthe voltage across each resistor?
Please include steps so I might use these to study andsolve similar problems.

find the amplitude of the current i0 through the voltage source.

To understand the use of phasors in analyzing a parallel AC circuit.Phasor diagrams, or simply phasors, provide a convenient graphical way of representing the quantities that change with time along with .This makes them useful for analyzing AC circuits with their inherent phase shifts between voltage and current. If a quantity I(t) changes with time as , a phasor is a vector whose length represents the amplitude Io(see the diagram). This vector is assumed to rotate counterclockwise with angular speed ; that way, the horizontal component of the vector represents the actual value I(t) at any given moment.In this problem, you will use the phasor approach to analyze an AC circuit.