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Parallel plate capacitor. Plates have area of 2x2cm2 and interplate seperation is 1mm. Insulator inside capacitor has dielectric constant εr=4. Voltage across capactior has 10V amplitude.A) Find displacement current density Jd inside capacitor if voltage is V(t)=10sin(ωt) with frequency (i)60Hz, (ii) 6kHz.B) Draw graph of amplitude of total current through capacitor as a funciton of fC) Draw graph of rms value of total current as function of f.
A sensitive IC (integrated circuit) on a circuit board is located 1m from a long power line carrying 10A. The power line generates a magnetic field. You can place a trace on a circuit board with current running parallel to the power line to cancel..
Find the current i1 through a branch connected to a node of an ac circuit, knowing that i1 enters the node and connected to the same node are three other branches carrying the currents: i2 = 14.6 sin(377t - 15°) A, leaving the node,
The practical voltage source is formed by combining an ideal voltage source (Vs) and internal resistance (r). 1) Without computing, determine sign of power Ps delivered by voltage source
A 1900x10^(-6)F capacitor, intially cahrged to 120V, is discharged by a steady state of 120x10^(-6)A how long does it take to discharge the capacitor to 0V
Defibrillator machines are used to deliver an electric shock to the human heart in order to resuscitate an otherwise non-beating heart. It is estimated that a current as low as 17 mA through the heart is required to resuscitate.
suppose the one dimensional field. A-=Kx ax- exist in a region. illustrate the validity of Gaussian theorem by evaluating its volume and surface integral inside and on the rectangular parallelelpiped bounded by the surfaces:
There are two charge distributions: one in a infinite plane of charge in x=-2 with a surface charge density of 3mC/m2, abd a infinite line of charge with a linear charge density of -3mC/m that goes through the points A(0, 0, 3m) and B(0, 3m, 0).
The speed of a 10HP, 230V, 1200 rpm separately excited DC motor is controlled by a 1-phase full-wave bridge converter. The rated armature current of the motor is 10 A. The armature resistance is 0.25 Ohm and the armature inductance is 10 mH.
Determine the output voltage of an op-amp for input voltages of Vi1=200uV at Vi2=140uV. The amplifier has a differential gain of Ad=6000 and the value of CMRR is A. 200 b. 10^5
A parallel-resonant RLC circuit has R = 75 I, L=50mh, and C=45pF. A) Sketch and label the circuit. B) Find fo, the resonant frequency. C) At what frequency is impedance a maximum D) What is the magnitude of the impedance at this frequency
A common-emitter amplifier with an emitter resistance RE, but without an emitter by-pass capacitor CE is good for high input resistance, common-emitter amplifier using an emitter by- pass capacitor is good for high voltage gain
Suppose that a voltage given by v(t) = 45 sin(100pt- 70°) is applied to a 9 O resistance. Sketch v(t) to scale versus time (make sure to put the labels on graph). Find the rms value of the voltage.
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