You've done the "physics" of this in the previous parts! (But e.g., you need a numerical estimate for 2. The second method to calculate roughness uses again the reciprocal. Then assuming that the height follows a Gaussian distribution the roughness is estimated as the rms value of the distribution. The first one is based on calculating the height distribution of an image. The calculator will give you the bias current for each tube. Select your tube type and amp class (Class A, Class AB Low, Class AB, or Class AB High) and enter your Plate Voltage or B+. If you see the lightning stroke, and then a few seconds later hear the thunder, make a very rough estimate of the resulting voltage difference across a distance the size of your heart (like: how much higher is the voltage on one side of your heart than the other side? (For you to think about - why is this not worrisome?) What's the model? I am thinking of a lightning strike as looking rather like a long uniform wire of charge. Three different methods have been implemented to calculate these magnitudes. As long as you know (or can test) the plate voltage in your amp, and have a way to measure the idle current, you can determine where to bias it, using our calculator. Although lightning is clearly not remotely "electrostatic", let's pretend it is - consider a brief period during the stroke, and assume all that charge is fairly uniformly distributed in a long thin line. d) Estimation: A typical Connecticut lightning bolt transfers a few Coulombs of charge in one strike. c)- Why is there trouble with setting V(C)=0? (our usual choice), or V(0)=0 (often our second choice). Where do you start? You know the Voltage, and you want the Electric Field! b)Check your answer by explicitly taking the gradient of V(s) to make sure it gives you back E. 1) Design a fixed-bias circuitry by explicitly calculating each component and variable values. Ē = dla 21€ S a) Show that if I assume the voltage is 0 at a distance so from the wire, then the voltage V(s) is given by V(s)= -In ( ) for a point a distance "s" away from the Z-axis.
We found that the E-field pointed radially outward in the s-hat direction) Ē = 21 s 47€.
CALCULATING VOLTAGE FROM E FIELD Using Gauss' Law, we investigated the electric field outside an infinite line that runs along the z-axis (i.e.
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