Potential Drop
Potential Drop - Related Videos
09:20
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Cited by 2 •
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We have developed a technique for picoinjecting microfluidic drops that does not require metal electrodes. As such, devices incorporating our technique are simpler to fabricate and to use.
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The shape of a small drop of liquid can be considered spherical, neglecting the effect of gravity. This drop can further be considered as two equal hemispherical drops put together due to surface tension. The forces acting on the spherical drop are due to the pressure of the liquid inside the drop, the pressure due to air outside the drop, and the force due to the surface tension acting on the two hemispherical drops. where γ corresponds to the surface tension. Recalling that the force per...
01:46
Developing Neuron Balls Using a Hanging Drop Culture Technique
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06:50
Electric Potential
0 Views •
2023
Source: Yong P. Chen, PhD, Department of Physics & Astronomy, College of Science, Purdue University, West Lafayette, IN Electric potential, also known as "voltage", measures the electric potential energy per unit charge. Electric field is a scalar quantity and is fundamental to many electrical effects. Like potential energy, what is physically meaningful is the difference in the electric potential. For example, the spatial variation in the electric potential is related to the electric...
07:07
In vitro Differentiation of Mouse Embryonic Stem (mES) Cells Using the Hanging Drop Method
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This video demonstrates how to conduct in vitro differentiation of mouse embryonic stem cells to embryoid bodies using the hanging drop method.
FAQs
The relation ΔV = −∫E·dl connects potential change to the electric field along a path. The negative sign indicates that potential decreases in the direction where the field does positive work on a charge. Consequently, both the field’s strength and its alignment with the charge’s motion influence the measured potential difference between two points.
For a resistive component, Ohm’s law gives V = IR, so the potential drop increases when either current or resistance increases. This relationship allows circuit analysis to connect an electrical measurement with the component’s behavior. Comparing potential drops across resistive elements therefore helps reveal how current and resistance determine voltage distribution in a circuit.
A battery’s potential difference helps drive current through a circuit, while a resistor’s potential drop corresponds to electrical energy transferred as heat. This contrast identifies different roles within the same circuit: the battery supplies the driving potential, and the resistive component receives energy through the charge movement. The distinction is central to interpreting circuit behavior.
First identify the two points or the circuit element being compared. Then determine the potential difference between those points, using the electric-field relation when field behavior is the focus or V = IR for a resistive component. Interpreting the result in terms of energy transfer helps connect the measurement to current flow and circuit operation.
Voltage measurements compare electric potential at selected points and can indicate how a circuit element or material responds within an electrical system. For resistive components, the measured drop can be related to current and resistance through Ohm’s law. In experimental physics, these observations help characterize behavior without treating the circuit as an abstract calculation alone.
Potential drop provides a practical way to analyze circuits, evaluate resistive components, and interpret how batteries transfer energy to other elements. It also links measurable voltage differences with electric-field behavior through the integral relation. Because the same idea applies to circuits and materials, it supports both electrical engineering design and experimental investigations of electrical systems.