Analytical Solution of Time Periodic Electroosmotic Flows: Analogies
... extrema that are stronger than the Stokes layers. This have
the potential to result in low Reynolds number flow
instabilities. It is also shown that, unlike the steady pure
electroosmotic flows, the bulk flow region of time periodic
electroosmotic flows are rotational when the diffusion
length scale ...
... of 2hν, 3hν, or higher are observed. These correspond to bands called overtones in an IR spectrum. They
are of lower intensity than the fundamental vibration bands.
A molecule is not just two atoms joined on a spring, of course. A bond can come apart, and it cannot be
compressed beyond a certain poi ...
Chapter 13 - UniMAP Portal
... Henry (H) The unit of inductance.
RL time A fixed time interval set by the L and R
constant values, that determines the time response of a
circuit. It equals the ratio of L/R.
Inductive The opposition of an inductor to sinusoidal
reactance current. The unit is the ohm.
Quality factor The ratio of re ...
... – but if so, it was never properly explained to us how this related to circuit
design, power supply decoupling, PCB layout, shielding, filtering, etc…
– either to make circuits function well, or achieve EMC,
to improve our employer’s financial performance
a single-phase cascaded multilevel inverter
... is comprised of a series connection of the proposed basic unit and is able to only generate
positive levels at the output. Therefore, an H-bridge is added to the proposed inverter. This
inverter is called the developed cascaded multilevel inverter. In order to generate all voltage
levels (even and o ...
Electrostatic Potential and Capacitors 2 ) Find the charge on 4uF
... c) In a certain region 0.1 m3 of space, electric potential is found to be 5V throughout. What is the electric
field in this region? 
d) Write down the dimensional formula of potential? 
13 Two charges 3C and - 3C are placed at points A and B 6 cm apart.
a) Identify an equipotential surface ...
Components and Methods for Current Measurement
... A signal to indicate the “how much” condition and the “too much” condition is available in a variety of different measurement
methods, as listed below:
1. Resistive (direct)
a. Current sense resistors
2. Magnetic (indirect)
a. Current transformer
b. Rogowski coil
c. Hall effect device
3. Transistor ...
... The difference between a capacitor and a battery is
that a capacitor can dump its entire charge in a tiny
fraction of a second, where a battery would take
minutes to completely discharge itself. That's why the
electronic flash on a camera uses a capacitor -- the
battery charges up the flash's capaci ...
electric current - iGCSE Science Courses
... State that current is related to the
flow of charge
• Use and describe the use of an
ammeter, both analogue and digital
• State that current in metals is due to
a flow of electrons
... Models for electrostatic interactions in the
CO complexes - amino acid mutations
... Physical parameters affecting inductance
The inductance given by the equation in the
previous slide is for the ideal case. In practice,
inductors have winding resistance (RW) and
winding capacitance (CW). An equivalent circuit
for a practical inductor including these effects is:
... The basic capacitor is composed of two parallel metallic plates separated by a non-conducting material
called a dielectric. You will construct one for your crystal radio. The dielectric material can be a vacuum, air,
paper, polystyrene, mica, or glass. Capacitors can be fixed (non-adjustable) or var ...
Measuring and Using Electricity tg.qxd
... There are two types of current. One is called alternating current, or ac, for short. The other is direct current, or dc.
Direct current is the kind of current we get from batteries. This
kind of current always travels in the same direction.
Alternating current is the kind used in homes, businesses, ...
Constructing the dual graph from the original graph
... • Characterizing and finding dead center positions of mechanisms
and the stability of determinate trusses.
• Correlation between Instant Centers and Equimomental Lines.
• Graph theory duality principal and the dual of linkages – trusses.
• Detailed example of the face force and the procedure for der ...
... Does changing the voltage supplied increase the capacity of the capacitor?
Does changing the supply voltage change the amount of energy that can be stored?
This is similar to the circuit found in the electronic flash in a camera.
Displacement Current Does Not Exist
... matter! To illustrate this, if we integrate equation 5 from another starting point to the
same end point, r, we will end up with an entirely different value for the magnetic field,
H! Obviously, there is something wrong!
Any one of these flaws would be sufficient to cast doubt on this and all of the ...
... by a non-conducting material (air, paper, rubber).
Capacitors are typically charged by connecting it to a battery which essentially removes electrons from one of the
plates and places them on the other plate. This electron flow will continue until the battery and capacitor are at the
same potential ...
... Basically MHD equation is the combination of
equations of fluid
dynamics and Maxwell's
equations of electromagnetism. Now a day’s MHD is
very vastly growing branch whose principle can be
applied to physical science and also fundamental
Generation of electricity
... where a smooth and wide range of speed control is required.
It is generally more economical to transmit and distribute electricity
in alternating current (AC) form, therefore all electricity generated at
The exception is for very long transmission lines connecting two
... component, a device that can amplify, producing an output signal
with more power in it than the input signal.
... What is the difference between an open In an open circuit, the path is not
circuit and a closed circuit? In which type complete and electricity will not
of circuit can electrons flow?
flow. In a closed circuit, the path is
Chapter 9 (Part B)
... ____________________, electricity flows in the wire.
•An electrical generator consists of:
–A bar _________________ mounted on a rotating pedestal
–Two ____________ plates positioned at the end of the magnet and connected
with a large loop of wire (or a metal core with a coil of wire around)
Capacitors - Honors Physics Website (Blue 5)
... Capacitors store electric charge and decay
through exponential means.
They are made out of two parallel plates with a
material (typically waxed paper) between them.
This material is called a dielectric.
Lecture 07: Current Flow - Purdue Physics
... Current – Orders of Magnitude
• 1 x 10-12 A = 1 pA (about 107 e-/s)
•10 x 10-9 A = 10 nA (leakage current in transistors)
• 1 x 10-6 A = 1 A (typical input current to IC)
• 1 x 10-3 A =1 mA (humans can feel this)
Lecture 23 - UConn Physics
... electric and magnetic fields into four equations, all
of which you now know.
• However, he realized that the equations of electricity
& magnetism as then known (and now known by
you) have an inconsistency related to the
conservation of charge!
A Bond graph is a graphical representation of a physical dynamic system. It is similar to the better known block diagram and signal-flow graph, with the major difference that the arcs in bond graphs represent bi-directional exchange of physical energy, while those in block diagrams and signal-flow graphs represent uni-directional flow of information. Also, bond graphs are multi-energy domain (e.g. mechanical, electrical, hydraulic, etc) and domain neutral. This means a bond graph can incorporate multiple domains seamlessly.The bond graph is composed of the ""bonds"" which link together ""single port"", ""double port"" and ""multi port"" elements (see below for details). Each bond represents the instantaneous flow of energy (dE/dt) or power. The flow in each bond is denoted by a pair of variables called 'power variables' whose product is the instantaneous power of the bond. For example, the bond of an electrical system would represent the flow of electrical energy and the power variables would be voltage and current, whose product is power. Each domain's power variables are broken into two types: ""effort"" and ""flow"". Effort multiplied by flow produces power, thus the term power variables. Every domain has a pair of power variables with a corresponding effort and flow variable. Examples of effort include force, torque, voltage, or pressure; while flow examples include velocity, current, and volumetric flow. The table below contains the most common energy domains and the corresponding ""effort"" and ""flow"".A bond has two other features described briefly here, and discussed in more detail below. One is the ""half-arrow"" sign convention. This defines the assumed direction of positive energy flow. As with electrical circuit diagrams and free-body diagrams, the choice of positive direction is arbitrary, with the caveat that the analyst must be consistent throughout with the chosen definition. The other feature is the ""causal stroke"". This is a vertical bar placed on only one end of the bond. It is not arbitrary. As described below, there are rules for assigning the proper causality to a given port, and rules for the precedence among ports. Any port (single, double or multi) attached to the bond shall specify either ""effort"" or ""flow"" by its causal stroke, but not both. The port attached to the end of the bond with the ""causal stroke"" specifies the ""flow"" of the bond. And the bond imposes ""effort"" upon that port. Equivalently, the port on the end without the ""causal stroke"" imposes ""effort"" to the bond, while the bond imposes ""flow"" to that port. This is made more clear with the illustrative examples below.If the dynamics of the physical system to be modeled operate on widely varying time scales, fast continuous-time behaviors can be modeled as instantaneous phenomena by using a hybrid bond graph.