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If two points are all at the same potential does this mean that no work is done moving a test charge from one point to the other?
Wiki User
∙ 16y ago
Correct, no electrical work would be done. There may be some mechanical work done by the mechanism that moves the charge and this will probably be converted to heat.
Wiki User
∙ 16y ago
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What is invariance of charge?
Invariance of charge refers to the independence of electrostatic potential of a particle from its speed. That is, the charge of a particle does not vary with its speed. In other words charge is not relativistic as opposed to relativistic quantities such as mass, energy etc.
What cause the membrane potential of a neuron?
Opening or closing of ion channels at one point in the membrane produces a local change in the membrane potential, which causes electric current to flow rapidly to other points in the membrane.
What is the definition of voltage?
Difference in potential between two points. Like the voltage of an energizer AA battery is 1.5 volts BETWEEN its terminals. If you place two AA batteries in a flashlight, the voltage of the series combination of AA batteries from one tip to the other is now 3 volts.
Potential and kinetic energy?
Kinetic energy is energy that is moving or in motion. Potential energy is energy that is still but has potential to move. Both energy's can switch back and forth from each other. Energy is never lost, it just changes forms. Hope this helps!
How does electricity flow within electric circuits?
electrical charges flow in a series circuit buy a power source and a load
How does the motion of a swing illustrates the transformation between kinetic and potential energy?
When the swing reaches its two highest points, its kinetic energy is zero because it is not moving momentarily, and its potential energy is at its maximum. As the swing moves away from its two highest points, in other words, swings, its potential energy decreases and its kinetic energy increases.
How does the motion of a swing illustrates the transformation between potential and kinetic energy?
When the swing reaches its two highest points, its kinetic energy is zero because it is not moving momentarily, and its potential energy is at its maximum. As the swing moves away from its two highest points, in other words, swings, its potential energy decreases and its kinetic energy increases.
What unit shows the difference in charge between two points?
I don't think such a unit is used, or would make much sense, in physics. That sounds like the description of voltage - unit volt. However, the volt is not really a difference in electric charge, but rather, of electric potential. It can be understood as potential energy related to electric fields: if there is an electric potential between two points, it requires a certain amount of energy to move a unit charge from one point to the other. Thus, the unit volt is equivalent to joules / coulomb.
What are collision?
They are the contact points between plates that are moving toward each other.
What is collision potential and closing potential?
Collision potential and closing potential have to do with physics. These terms are in reference to how fast atoms collide with each other and the result of the collision. The faster the atoms are moving the greater the closing potential.
What is voltage difference?
Voltage at a point is defined as the work done by a unit positive charge carrying it from infinity to that point. while volage diffrance between two points is the work done bye unit positive charge from one point to the other point.work may be positive or negative depend upon the nature of charge that's why the potential will be negative or positive .CommentBy definition, voltage means potential difference. For this reason, you cannot have 'a voltage at a point' because potential difference, or voltage, exists between two points. You can, however, have a potential at a point.
What is the diffrens bitween voltage and current?
voltage is force due to which flow of charge take place that is a currentAnswer'Voltage' is another word for 'potential difference'. A voltage exists between two points which, due to charge separation (by battery or generator action, for example), are 'unbalanced' in the sense of their electric charge. That is, one point is either more positive, or more negative, compared to the other, due to either a deficiency (more positive) or an excess (more negative) of electrons. We say that the two points exist at different potentials and that there is a potential difference between them.If a conducting material is connected between the two points, then this charge imbalance balance will cause charge to flow through the conducting material. This flow of charge is termed an electric current. In the case of a metal conductor, the current is a flow of electrons. Electrons, being negatively charged, will be repelled by the more negative external potential, and will be attracted towards the more positive external potential.In order to maintain the current, the potential difference must be maintained by constant charge-separation by, for example, battery or generator action (there are other methods!).To summarise, an external voltage, or potential difference, will result in a current through the conductor. Voltage, or potential difference, exists across a circuit, whereas current is a flow of charge through the conductor. Voltage is measured in volts, while current is measured in amperes.
The electric field inside a hollow uniformly charged sphere is zero Does this imply that the potential is zero inside the sphere Explain?
If the net charge enclosed by a surface is zero then the field at all points on the surface is not zero because gauss's law states that if the charge enclosed by a surface is zero then the flux through the surface is zero which depends upon the magnitude of field and the angle that it makes with the area vector at each point and so it is not necessary that the field will be zero at all points of the surface.
What is single electrode potential?
An electrode potential is the potential difference that develops when an electrode of one element is placed in a solution containing its ions. In a galvanic cell, electricity is produced by the electrode potential of the two metal electrodes and their corresponding electrolytes.
What is invariance of charge?
Invariance of charge refers to the independence of electrostatic potential of a particle from its speed. That is, the charge of a particle does not vary with its speed. In other words charge is not relativistic as opposed to relativistic quantities such as mass, energy etc.
True or false moving charges generate electrical energy which changes into sound light and heat energy?
Moving electrons (which carry a negative charge) in a wire generates a magnetic field round the wire.Moving a wire in a magnetic field causes the electrons in the wire to move (a moving charge).A moving charge is electrical energy.The energy in a moving charge can be converted into other forms of energy such as sound, heat and light however this energy conversion is not spontaneous.Therefore the answer to the question is "false".
The electric field of a point charge always points away from the charge?
If the given point charge is of positive one then the field points away from the charge. This is because we define the field at a point as the FORCE acting on unit POSITIVE charge. Like charges have to repel and hence the direction. If, other wise, the point charge is negative then electric field due to this negative charge would be towards the negative and not away from it.
