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A box contains 'm' white balls and 'n' black balls.Balls aredrawn at random one at a time without replacement. Find the probability of encountering a white ball by the kth draw.
A class C amplifier severely distorts the signal. How can we use a resonant tuned filter to get the desired signal at the output What type of transistor (BJT or FET) would you like to use at the front end (first amplifier) of a receiver
If the temperature remains constant and the external currentlI increases, what happens to the size of the depletion region Why
A series circuit consists of a voltage source and four resistors (R1=1k-ohm; R2=30-ohm; R3=470-ohm; R4=2k-ohm). The resistor of 1k-ohm has a voltage of V1=3V across its terminals. a) Find the current out of the voltage source.
The voltage across a 10-µF capacitor is given by v(t)=100sin(1000t). Find expression for the current, power, and stored energy. Sketch the waveforms to scale versus time.
A 1.8-kW electric heater takes 15 min to boil a quantity of water. If this is done once a day and power costs 10 cents/kWh, what is the cost of its operation for 30 days
From the equation for intermediate frequencies, what is thephase angle between the current and electric fieldwhen ωτ = 1, 0.1, and 10. For each case, write an expression for the time dependence of current if the electric fieldvaries as sin(ωτ).
The manufacturer of a 9Volt dry cell flashlight battery saysthat the battery will deliver 20mA for 80 continuous hours. Duringthat time the voltage will drop from 9Volts to 6 Volts. Assume thedrop in the voltage is linear with time.
What degree of matching in emitter area is required for the base-emitter voltages of two bipolar devices with identical collector currents to have a difference of less than 5.0mV Use VT= 25.85mV.
A firefighter of mass 85 kg slides down a ver tical pole with an acceleration of 5 m/s2. The acceleration of gravity is 10 m/s2 . What is the friction force that acts on him
A long-haul optical transmission link is to be designed under the design constraints that (i) the radius of the core is to be no smaller than 4 ?m, and (ii) a numerical aperture (NA) of at least 0.12 is needed to focus optical energy into the fibe..
1. What is the step response equation for charge time 2. How to determine the current in RLC circuit using the osciscope 3. List three reseasons why the measured value and pspice value for tau are different.
An RLC circuit exists, with current flowing counter clockwise through it. R= 5.661 Ohms, L=20.2 mH, and C=157.6?F. Voltage across the capacitor is positioned so that the current meets the positive terminal first.
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