Resistive circuit Definition and 14 Threads

Forget the mathematical derivations because the answer is wind (and you know it). It too has an exponential relationship with energy loss, and you can experience it yourself. It's not too hard to pedal a bike at 20km/h, much less easy at 30km/h, and almost impossible at 40km/h with respect to...

Homework Statement The attached picture is the circuit I have been given and I am asked to find Vo (the voltage drop across the 6k resistor. Homework Equations v_out/v_in = (R_1 + R_2)/R_1 V+ = V- The Attempt at a Solution So I know that the voltage drop across the 6k resistor is just the...

Homework Statement Two cells of same emf E and different internal resistance r1 and r2 are connected in series to an external resistance R.The value of R for which the potential difference across the first cell is zero is given by (A) R=r1/r2 (B)R=r1+r2 (C)R=r1-r2 (D)R=r1r2 Homework Equations...

I am trying to create a conductive Silicon Carbide (SiC) heating element. The US patent 650234 "Process of making carborundum articles", filed in 1899 states essentially that crushed SiC crystals can be be glued together (using diluted glue) then sintered. It states that the addition of 15-20%...

Is the no. of electrons on a brand new unused and untested harddisk is different from no. of electrons on a used hard disk completely filled with data. i mean will there be even a change of one electron? Please consider the following points before answering: 1- Does all the electrons from a...

Homework Statement Hi everyone! I'm trying to find the thevenin equivalent for part A of this circuit: http://imgur.com/4Jdg8w8 Homework EquationsThe Attempt at a Solution I first remove part B, that is, open circuit it entirely. Then I try to find Voc across the two terminals that are open. I...

Hey! 1. The problem Figure shows a very long ladder where every part has a resistanse of R. What is the resistance between A and B if the ladder can be approximated to be semi-infinite (the ladder has a beginning but no end).2.The figure 3. The attempt The first three resistances have a...

Homework Statement http://puu.sh/6PZNJ.png Homework Equations This is supposed to be a pretty easy problem, but can i assume the resistors are in series? The other loops are throwing me off. The Attempt at a Solution

Homework Statement I need help solving this problem. I don't understand what to do when there's 2 voltage sources. The problem asks you to find the power absorbed at each resistor http://www.facebook.com/photo.php?fbid=2950199437043&set=a.2950198837028.2154160.1323079519&type=3&theater...

When I was a kid listening to a transistor radio under my pillow late at night I used to wonder whether turning the volume down low would delay the gradual loss of battery voltage. My doubts centered in the fact that the volume control was (at least in those days) a variable resistor. I reasoned...

Hello all, I'm a new member. I've decided banging my forehead until its red will not make me any more able to solve my practice problems. I hope I haven't posted this in the wrong forum but here is the question in concern: Select R in the circuit so that VL= 5 V (see circuit in attachment...

Hey guys, so I have a homework question that I have already solved one way, but when I try it another way I can't seem to get the correct answer. First of all, the question is: "A single resistor is wired to a battery as shown in the diagram...

Homework Statement A single resistor is wired to a battery as shown in the diagram below. (Figure 1) Define the total power dissipated by this circuit as P(subscript 0). Now, a second identical resistor is wired in series with the first resistor as shown in the second diagram to the left...

Hi, I am having difficulty understanding why potential must drop completely over a circuit from the high side of the source to the low side of the source. I've seen this statement in several books now with no further explanation other than "it must". Consider a simple dc circuit consisting of...