0
Because Electric field can be expressed as the gradient of a scalar. Curl of a gradient is always zero by rules of vector calculus.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
The potential is constant through a given region of space Is the electrical field zero or non zero?
the electrical
The electrical intensity inside a charged hollow sphere is?
The electric FIELD inside a charged hollow CONDUCTOR is zero.
What is the relations between electrical field and electrical potential?
The electrical field E = - dV/dr, the derivative of the electrical potential, V.
Does an electrical field become weaker as distance from the electron increases?
true! An electrical field becomes weaker.
What is eletrostatic?
An electrical field which is NOT changing.
The potential is constant through a given region of space Is the electrical field zero or non zero?
the electrical
What is wind stress curl?
Curl is the rotation of wind field
The electrical intensity inside a charged hollow sphere is?
The electric FIELD inside a charged hollow CONDUCTOR is zero.
Is the magnetic force an example of a nonconservative force?
Yes. For any vector field, force included, to be conservative, it must be irrotational, meaning that its curl must be zero everywhere. Fortunately (for me at least, since it makes this answer a whole heck of a lot easier to explain), the magnetic force field vector is already commonly expressed as a curl via Maxwell's equations:∇ X B = μ0J + μ0ε0∂E/∂t,where B is the magnetic field, μ0 is the permeability of free space, ε0 is the permittivity of free space, J is the current density, E is the electric field, t is time, and ∇ X B is the curl of the magnetic field. Bolded quantities are vectors.Now, if you don't know a thing about vector calculus, hopefully you at least remembered what I wrote above. For a vector field to be conservative, its curl must be zero everywhere. As you can hopefully see from that above equation, the curl of the magnetic field, ∇ X B, is not zero everywhere. More specifically, if there is a current density, J, within the magnetic field, or if there is a time changing electric field, ∂E/∂t, within the magnetic field, the curl of the magnetic field is not zero, therefore the magnetic force field is nonconservative.If you get lucky enough to find a situation where there is no current density or time dependent electric field, which is in reality impossible due to electrons providing there own time dependent electric fields, then the magnetic force field would be conservative.
If an electrical current passes through a conductor what two things are generated?
If an electrical current passes through a conductor, there is an induced voltage (because no conductor has perfectly zero ohms), resulting in power dissipation, and there is a magnetic field, which can interact with other conductors in the vicinity of the first.
What is the relations between electrical field and electrical potential?
The electrical field E = - dV/dr, the derivative of the electrical potential, V.
Why emf is not zero when field current is zero?
because zero is zero
Does a charge in motion establish an electrical field?
yes because(F=Q.v.B) Than electrical field intensity is (E=v.B) that established a electrical field.
What has an electrical charge of zero?
The Neutron.
What is the electric charge of a neutron?
A neutron doesn't have an electrical charge; its electric charge is zero.
What happens to d.c motor when Field is weakened in DC?
when the field winding of dc motor opens the flux is zero so the speed is inversely propotional to speed ,so motor runs at dangerous speed...........
Does an electrical field become weaker as distance from the electron increases?
true! An electrical field becomes weaker.
