Parallel Definition and 1000 Threads

Homework Statement Here's the circuit in question http://s52.beta.photobucket.com/user/I_eat_corn/media/circuit1.png.html I need to calculate the voltage at terminals A, B, C, and D. (A and B are finished and checked) Homework Equations Ohms Law, E=IR, I=E\R, R=E\I, P=VI or RI^2 The...

Hi, With the condition that 2 helmholtz coils are parallel with each other sharing the same axis in space . . . What are the differences between electrically connecting up the coils in series and in parallel? cheers

Homework Statement Find the equivalent resistance between points A and B shown in the figure(Figure 1) . Consider R1= 2.2 , R2= 1.0 , R3 = 3.6 , R4= 5.0 , R5= 4.0 , and R6= 7.6 . http://i.imgur.com/EBJmSvk.png Homework Equations For resistors in parallel, 1 / Req = 1/r1 + 1/r2 +...

1. A proton is suspended in a vacuum between two oppositely charged horizontal parallel plates. The separation between the plates is 2.60mm 2. I assume it uses E=vd/d, but I don't really know 3. what is the sign of the charge on the lower plate? what is the voltage across...

I'm tasked to find the force one parallel plate exert on the other plate in a capacitor. somehow the force isn't just F=qE, where E=Q/2εA What am I missing here?

Homework Statement Six infinitely long parallel wires, each carrying current +I in z direction, perpendicular to the (x, y) plane. They are spaced at angles 2pi/7 around a circle of radius d. A seventh wire, which would make the arrangement symmetric, is missing. What is the magnitude and...

parallel plane -- electric field and potential Homework Statement Consider 2 plate A and B. They are connected with a battery and their distance is halved. What will happen as a whole ? Homework Equations The Attempt at a Solution 1. Charge per unit area increase due to increase in electric...

Consider the vectors a=<2,4,-3> and b=<4,-5,6>. Determine vectors v and w such that a=v+w and v is parallel to b while w is orthogonal to b.The dot product of two orthogonal vectors is zero and the cross product of two parallel vectors is zero. A parallel vector is a multiple of the chosen...

If we have two parallel conducting plates ( of surfaces 1msq each), set at a very small distance apart, so that the plates can be considered like infinite plates (no edge effect). Both plates are neutral at first. Now a charge (say +Q) is placed on one of the plates. the other still is...

Homework Statement What is the electric potential two-fifths of the way through a parallel-plate apparatus (from the positive plate) if the plates have a total separation of 5cm and field strength of 5000N/C.Homework Equations Difference Potential Energy = Electric Field Strength x Distance V =...

Homework Statement Two parallel plates labelled W (negative) and X (positive) are separated by 5.2 cm. The electric potential between the plates is 150 V. An electron starts from rest at time tw and reaches plate X at time tx. The electron continues through an opening in plate X and reaches...

Homework Statement Two oppositely charged parallel plates are separated by 0.20m and have an electric potentiial difference of 1.2*10^3V across them. Locations I and II are in the region between the plates. Distance between top and bottom plate is 0.20m. \stackrel{}{postive...

Homework Statement We are given a circuit as follows: V= 10 V and two resistors are in parallel. R1 is 12 ohms and R2 is 5 ohms. What is the power dissipated in the 12 ohm resistor? Homework Equations V=IR P=(I^2)R The Attempt at a Solution I know that the total resistance of...

Hi. I have a mass between 2 springs. See attachment. Both springs are compressed. I'm trying to convince myself that the springs act in parallel. I've done the calculations and it checks out ok, but I'm struggling to visualise this. In my mind, if an external force is applied to the mass to...

Homework Statement Find the vector equation of a plane that contains the point P(2,-3,0) and is parallel to the yz-plane Homework Equations Vector equation is in the form... Pi: r = point + t(u) + s(v) s,t element of real numbers The Attempt at a Solution We know that the direction...

I am new with the topic Capacitors .I have read that a capacitor can be charged in two ways .One using the battery which I understand .The other is by charging one plate and grounding the other plate .I am not able to understand how this is done . Suppose +q charge is given to a plate ,say...

Homework Statement Q .1 The plates of a parallel plate capacitor are given equal positive charges. What will be the potential difference between the plates? What will be the charges on the facing surfaces and on the outer surfaces? Q.2 Each plate of a parallel plate capacitor has a...

Homework Statement An electron traveling 1.3*10^2m/s enters the region between two parallel plates at the distances shown. When it collides with the plates, it has a speed of 1.8*10^3 m/s. What is the electric field between the plates? What is the electrostatic force on the electron? And how...

Am I correct in saying that the angular deficit (change in angle) of a vector transported around a closed surface on a curved surface can only be observed by flattening the surface? Actually a further problem- I understand it from the flat sheet to a cone: Cut out a pie from a sheet, Draw a...

Homework Statement Consider three plane charged sheets, A, B and C. The sheets are parallel with B below A and C below B. On each sheet, there is a surface charge of uniform density: -(4/3) * 10^-5 (Call α) -(7/3) * 10^-5 (Call β) -(3/3) * 10^-5. (Call γ) (The density given includes...

Homework Statement Homework Equations resistors in series add resistors in parallel add inversally. the denominator of the answer(which is the fraction) will be your answer The Attempt at a Solution I added annotations to show my thought process this last part was a good tricky question...

Homework Statement Draw the field lines between two parallel plates with +3V on one plate and +1V on the therHomework Equations The Attempt at a Solution The answer is (D) for a uniform field between the plates, however when two positive charges are drawn the field lines diverge as in (B)...

Hello, I would like to know how you can calculate the current in a circuit with cells in parallel. When searching for this on the web all I get is current in parallel circuits, and not my specific question about cells in parallel. If there is maybe an equation, method, or link somebody could...

Hi guys, I want to ask if I can use the voltage divider rule to solve for part (ii). Thanks!

Hi, I am conducting an experiment whereby I have to measure the individual performance (on a per-cell basis) of solar cells on a solar panel. The panel has 20 cells, which are 4 strings in parallel of 5 cells in series each. The entire panel has a +V and chassis GND wire that I can open or...

Can one take 4 - 1 amp diodes check them with diode tester and if they match hook them in parallel and get a 3.6 amp load to pass thru them? John http://d1dtbvo20ouog7.cloudfront.net/s/help-0003.gif

Homework Statement A parallel system functions whenever at least one of its components works. Consider a parallel system of ##n## components, and suppose that each component works independently with prob 1/2. FInd the conditional prob that component 1 works given that the system is...

Homework Statement Three long, straight wires are carrying currents that have the same magnitude. In C the current is opposite to that in A and B. The wires are equally spaced. Each wire experiences a net force due to the other two wires. Which wire experiences a net force that has the...

Homework Statement Two parallel mirrors are separated by a distance of d = 4 meter. A point object is placed at a position a = 0.4 meter from the mirror 1. How deep is the second image of the object in the mirror 1? How deep is the third image of the object in the mirror 1...

Hi all, New here...I was wondering if anyone knows a formula to calculate the (insulation) resistance between two parallel conductors buried in an insulator. For example say 2 copper pins of 1mm diameter spaced 2mm apart over a 20mm length in a plastic (ptfe). The numbers/material are not...

Homework Statement I need to find the complex current in this circuit http://imageshack.us/photo/my-images/51/figure1j.jpg/ Homework Equations I calculated the inductor's impedance and found that impedance = 12.57 Ohms so I used it in the equation for the Current. I need to write the answer...

Hey guys, just wanted to get a quick check that this proof is sound. Homework Statement Let L, K be two parallel lines, and let F be an isometry. Prove that F(L) & F(K) are parallel. Homework Equations If P and Q are points on the plane and F is an isometry, the distance PQ = the distance...

Homework Statement Circuit as shown: (sorry about the amazing paint skills) The pd is being applied from A to B (C is in the centre of the circle) (1) Determine the relations between the current by reversing V and using symmetry or by any other suitable method (2) Calculate the total...

Homework Statement Use Kirchhoff’s junction rule and loop rule (twice) to find the effective resistance of the two resistors connected in parallel as shown, and demonstrate that this agrees with the expression 1/R = 1/R1 + 1/R2 (poorly drawn picture of the circuit) The Attempt at a...

Torsion has propped up in a couple of recent threads, but none of my texts really cover it well. Does torsion make parallel transport direction dependent? I.e. if we parallel transport some vector v "forwards" along a curve, and then "backwards" along the very same curve to its starting...

Hello, everyone! I'm studying Nakahara's book, Geometry, Topology and Physics and now studying the connection theory. I come across a problem. Please look at the two attachments. In the attachment , Nakahara said we could use the similar method in the attachment to get \tilde X, but why...

Homework Statement A line charge starts at x = +x0 and extends to positive infinity. The linear charge density varies inversely with distance from the origin, λ(x)=(λ0*x0)/x derive the expression for the electric field at the origin, E0, due to this infinetly long line-charge (L→+∞)...

Homework Statement http://imageshack.us/a/img197/3519/circuith.png Equivalent Resistance of circuit = 17.31 Ω Homework Equations V = I * R The Attempt at a Solution Total voltage of the circuit, if I'm doing this correctly should be: E = (3.00 A) * (17.31 Ω) = 51.93 V...

Homework Statement I have three valve/coil systems connected in parallel as shown in the attached figure. If I know the head loss of each valve/coil is 40 feet, can I add them in parallel like you do with resistors in circuits? Thanks! Homework Equations 1/h=1/h1+1/h2+1/h3 (possibly)...

Homework Statement What is the potential energy of an electron in a parallel plate capacitor if kept on the negative plate before being released? Homework Equations 1/2mv^2 = qV = PE Capacitor Energy = 1/2QV The Attempt at a Solution 1/2mv^2 = qV = PE However if I'm not mistaken there's...

Homework Statement http://imageshack.us/a/img829/1351/circuite.png Find the current through R3 and R2. The resistance of R2 and R3 are 3.00 Ω, so the total resistance should be 9.00 Ω. I = 80.0 V / 9.00 Ω = 8.89 A Homework Equations I = E/R (I think?) The Attempt at a...

Homework Statement Sorry. I know this question is on the forum somewhere, but I still don't get it... Thus. For parallel wires, at the mid-point of the wires, what is the strength of the magnetic field? Do I use the formula B=\frac{μi_{1}i_{2}L}{2∏r}, or is it the sum of B=\frac{μi}{2∏r}...

A 1000 ohm resistor, 500 picofarad capacitor, and 2 millihenry inductor are all conducted in parallel. What is the impedance if the frequency is 10 kilocycles per second? 10 megacycles per sec? At what frequency is the absolute value of impedance the greatest? I know I start by considering...

hello I have a question: i am trying to understand how we find out that the curvature of the universe is zero using the angular size of the hot spots of the d microwave background radiation. http://scienceblogs.com/startswithabang/2012/07/18/how-big-is-the-entire-universe/ there is a...

Hi, A parallel plate capacitor is charged from fixed voltage, after I cut voltage source. Now, what's happened if I place a Faraday cage inside capacitor (without touch capacitor) ? Capacity changed ? So energy of capacitor changed ?

Hi, so I'm having a little trouble understanding why... you would put a dielectric in between a parallel plate capacitor? I know it increases the capacitance but it does so by lowering the potential difference sooo... The charge is still the same, I believe the potential energy also decreases as...

Just throwing this idea out there and wondering if there is any reason it would not work. In a parallel plate capacitor, the maximum voltage is controlled by the dielectric strength and the thickness of the dielectric. When using vacuum as a dielectric, there is a voltage dependant leakage...

Homework Statement Find the points on the graph y=x^3/2 - x^1/2 at which the tangent line is parallel to y-x=3. Homework Equations The Attempt at a Solution First I found that the derivative of y=x^3/2 - x^1/2 is 1x. I then rewrote the other line as y = 3+x and found the...

Homework Statement I am somewhat confused about when you can add parallel current sources: Are the sources in the diagram I drew - A - in parallel? To me they look like they are but I am not sure... Is there an easy way to visualize these problems?

Check this out: http://www.kickstarter.com/projects/adapteva/parallella-a-supercomputer-for-everyone. It's a project that aims to create open source hardware for scalable parallel computing. If you pledge $99, you get one of the computer they are building. In case anyone is wondering about...