Recent content by Xodar

Numbers actually mean nothing, the symbols mean everything. The meaning is in the algebra, not the arithmetic. That is why they keep changing the numbers for you. You actually don't need to study 100 solutions of the same thing. Q1: Inductor 'charged' \Rightarrow v_L(0_-)=0...

My advice was, I believe, don't touch anything. I actually said that if you touch two wires of different potential, you will get a shock. If you touch one wire then it depends on the potential of that wire and anything else you are touching - you already know this. My mention of the...

I am not sure what you mean by "my working" ... The engineering part is recognising that finding a voltage in a series circuit requires that you use either Kirchoff's voltage law or the V-I relationship for the element of interest. The algebraic part is then manipulating that equation to...

Averagesupernova was correct about the use of laser. They are used to fracture the glass at the focal point... check http://www.bathsheba.com/crystal/process/ This is being done a lot now for souvenirs.

Hi Wolf, The general solution we have been using is for the current series circuit or the voltage across the inductor (it is for the parameters of the reactive element) ... which means it does not generally apply directly to the resistor voltage. However, you can use it to solve for v_R(t)...

I am appropriately chastised ... although I think it is miscommunication rather than "misinformation". It does appear that North America is different to the rest of the world (again) in having two live conductors (http://en.wikipedia.org/wiki/Split_phase). This is based on a split phase...

Let's start from the beginning... Domestic loads are primarily resistive, with some inductive component. Your domestic power meter measures Watts - "resistive" power if you like, "average" power if you want to be consistent with electrical engineering. Industrial loads are more...

Assume you have a 120volt supply. The bulb resistance will cause a particular current to flow (I=V/R) and this will result in a certain amount of power being dissipated (P=VI=V^2/R). This means that a 40watt bulb has a specific resistance resistance (R_{40W}=V^2/P=120^2/40=360\Omega) and that...

Hi, I do not accept that your portrayal is accurate (or correct). [For that matter, I think you are overly dismissive of hydraulic analogies, which also have potential for explanation at the molecular level - whilst you are aware of the analogy you may not be "well" aware.] If the two wires...

Hi DethRose, The capacitors are equal in size and form a simple voltage divider across the source. Regardless of the current through the capacitors, the voltage across each capacitor must logically be half of the source voltage ... 5v @ 0degrees. V_{C1}=V_s\frac{Z_{C1}}{Z_{C1}+Z_{C2}}...

Hi cepheid, The Norton and Thevenin equivalent circuits are based on the property of linearity, and apply only to circuits that are linear in this sense. Without worrying too much about linearity, the result is that these models have an equivalent impedance (or resistance) which you will have...

Peavey_Wolfgang_200, There are only two forms of the solutions to the differential equations for these first order circuits. First order circuits are those that contain only one capacitance or one inductance, and are called first order because the differential equation that describes their...

Regardless of country, a three-wire AC system consists of an active wire, a return wire, and a neutral wire. The active wire is "live" at all times, carrying a potential that varies by 240volts or 110volts (rms) above and below the reference level (ground). This reversal in potential means...