0
Why electric field is negative gradient of electric potential?
Kanzakaiwan
This is because potential decreases if we move further from a positive plate
Wiki User
∙ 10y ago
Add your answer:
Earn +20 pts
Do electron moves up or fall down a potential gradient?
The potential gradient gives the electric field intensity E at point in electric field which is directed from high to low potential. An electron being a negative charge particle therefore will tend to move from low potential to high potential, hence will move up the electric field
What is the electric potential when the electric field is zero?
any gadget won't work, as no current would be able to pass due to lack of electric potential difference
What is the electric field half way to the centre of a conducting sphere charged to a potential of 15v?
electric field inside the conducting sphere is ZER0..! because their are equivalent charges all around the sphere which makes the net force zero hence we can say that the electric field is also zero.!
If the electric field due to the excess charge on the Earth points downward what type of charge does the Earth carry?
negative
Can an electric field exist without a magnetic field?
An electric field can exist even without the presence of a magnetic field. An example of this is a stationary electric field.
Do electrons move up or down a potential gradient?
The potential gradient gives the electric field intensity E at point in electric field which is directed from high to low potential. An electron being a negative charge particle therefore will tend to move from low potential to high potential, hence will move up the electric field
Do electron moves up or fall down a potential gradient?
The potential gradient gives the electric field intensity E at point in electric field which is directed from high to low potential. An electron being a negative charge particle therefore will tend to move from low potential to high potential, hence will move up the electric field
Is an electric field a potential field?
no electric field is not a potential field .ELECTRIC FIELD IS A SCALAR QUANTITY WHERE AS POTENTIAL IS THE VECTOR QUANTITY. NO SCALAR QUANTITY HAS A FIELD SO THERE IS NO RELATION BETWEEN ELECTRIC FIELD AND POTENTIAL OR IN OTHER WORD POTENTIAL HAS NO FIELD <<>> An electric field is a vector field, because it has magnitude and direction. A pair of charged parallel plates has an electric field between them directed from the negative to the positive plate. The electric field is the gradient of the potential, which is another field but a scalar one. A field is just a quantity with a value that depends on positon. The potential is measured in volts and if one plate is grounded and the other at positive potential V, the potential rises from zero to V as the position changes from the lower plate to the top one.
The movement of electrons results in what kind of activity?
A chemical reaction. An electric field gradient ( electric potential)
Relationship between electric field intensity and electric potential?
Electric field intensity is related to electric potential by the equation E = -dV/dx, where E is the electric field intensity, V is the electric potential, and x is the distance in the direction of the field. Essentially, the electric field points in the direction of decreasing potential, and the magnitude of the field is related to the rate at which the potential changes.
What distinguish electric field intensity from electric potential stating the unit of each?
Electric Field Intensity also simply referred to as the Electric Field is a vector quantity with the units (V/m) (Volts per meter) Symbol: E (Boldface to represent a vector)Electric Potential is a scalar quantity with units V (Volts). Also sometimes referred to as Voltage when dealing with the difference between two points. Symbol: V (non-bolded to represent a scalar)The relationship between the two is:The Electric Field Intensity E is equal to the negative of the gradient of V.
If potential is constant throughout a given region of space can you say that electric field is zero in that region?
If the electric field is zero, the electric potential is a constant value, but it does not tell you what that value is. All the electric field tells you is how the electric potential changes within the region you are looking at. If the electric potential at one end of a cylindrical region is 7 V and the electric field is zero within the whole cylinder, then the electric potential is 7 V at the other end, or somewhere in the middle, or on the side, and so forth. An electric field of zero tells you the potential does not change, but doesn't say anything about what it is outside of the region you're looking at.
Why curl of electrical field is zero?
Because Electric field can be expressed as the gradient of a scalar. Curl of a gradient is always zero by rules of vector calculus.
How does voltage gradient affect separation of charged particles in an electric field?
There is a direct relationship between the voltage gradient of an electric field and the separation of the charges. Higher voltage gradients will separate charges farther.
Is it possible that electric intensity at a point is zero but electric potential is not zero?
There are two answers to your question, and they depend on whether we're talking about electrostatics or electrodynamics.Electrostatics:No. In the absence of a varying magnetic field, the electric field intensity is equal to just the negative gradient of the electric potential; E = -∇Φ. So, if Φ is 0, its gradient, which is just the vector field made from the partial derivatives of Φ, has to be 0. The reverse, however, can happen. E can be 0, but Φ doesn't have to be; it can also be a non-zero constant. Electrodynamics:Yes. In the presence of a varying magnetic field, E = -∇Φ - ∂A/∂t, where A is the magnetic vector potential, and t is time. So, if Φ is 0 this time, E can still be equal to the possible non-zero term, -∂A/∂t.
Why is the potential at a point a scalar quantity?
Because the potential energy consumed or released when a charge is moved from any point to any other point (in an unchanging electric field) is independent of the path. Therefore the potential at any point is represented by a single number (of volts, if you like). If it's a single-number function of position, it's a scalar that has no direction. The gradient of the potential function on the other hand is a vector, the electric field.
What is electric potential dependent upon?
The magnitude of the electric potential is dependent upon the particle's charge and the electric field strength.
