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Explain why current is not a vector though it appears to posses a direction?
Its direction is wherever the conductor goes. Once the conductor is configured, the current has only two choices ... forward or backward, denoted by positive or negative current.
What Current are caused by temperature and density differences?
deep
Is current a vector or a scalar?
Definitely current is a SCALAR. Current density, of course, is a vector quantity Current = charge / time Both charge and time are scalars Current density = current / area Here area is a vector quantity Hence scalar product of current density and area give scalar quantity i.e. current. So electric current is a scalar Of course we assign +ve and -ve sign to currents. It is not because of direction as we do incase of vectors. But it is only algebraic sign.
What is the continuous flow that occurs in a heated fluid because of differences of temperature and density?
convection current
What is the current density of 316L stainless steel?
The current density, that is, the amount of current being conducted by a material per unit of cross sectional area (usually circular mil), will vary as the voltage that is applied, and, if it is AC, on the frequency of the applied voltage. More voltage will drive more current. For DC, the total current being conducted in a material (which is part of a circuit) will be divided by the cross sectional area to get the number of amperes per unit of cross sectional area. It's a direct relationship with the conductivity of the material under inspection not an issue because the totalcircuit resistance and the applied voltage will determine current. With the current through the material of interest known, its geometry can be used with the magnitude of the current to determine current density. In an AC circuit, the same as above, exceptthat the frequency, as it increases, will drive current toward the outside of the conducting medium - the so-called skin effect. Other calculation methods will have to be employed to determine current density which incude the effects of the frequency of the AC. At low frequencies, the effect will be almost negligible. Given these things about current and current density, it is not possible to calculate current density in 316L stainless (the low carbon version of 316 stainless) or of anything else we wish to consider without more information.
What is the current density formula?
J = ρ.u Where J = Current Density (Ampere per meter square) ρ = Charge Density (Coulombs per cubic meter) u = Particles average drift velocity (meters per second)
What is the symbol and unit of measurement of current intensity?
the symbol of current density is 'J'. & its unit is (Amp/m^2)
What is the unit you measure electric current?
Ampere, denoted by 'A'
What is the effect of density on conductivity?
*Electrical conductivity or specific conductivity [sigma] is a measure of a material's ability to conduct an electric current. When an electrical potential difference is placed across a conductor, its movable charges flow, giving rise to an electric current. The conductivity σ is defined as the ratio of the current density J to the electric field strength E : J=Sigma.E
WhAT density current mean?
Density current is where a warm current floats on top of a cold current.
What is current element how it is relates with current density?
The current element is directly proportional to the current density. The current density is the electric current per unit area of cross section.
what kinematic quantity has the same units?
work and energy have same unit which is jole denoted by "J"
What is the relationship between current and current density?
Current (I) is measured in amperes, which is an SI Base Unit, defined in terms of the force (expressed in newtons) between two, parallel, current-carrying conductors.Current is the rate at which electric charge (Q) flows. Electric charge is measured in coulombs, which is an SI Derived Unit, defined in terms of current and time (t) the ampere and the second. That is: Q = I t.So a 'coulomb' is a special name given to an 'ampere second'.
What is current element how it is relates with current density-?
Current density refers to the electric current per unit area of a given cross section.
Can freezing cause a density current?
No, trade winds and evaporation can cause a density current but not freezing.
According to ohms law the current density is proportional to?
Current density is unrelated to Ohm's Law.
Why do density current happens?
why do density currents hapen?
