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Why there is no current in a metal in the absence of electric field across it?
In the absence of an electric field, there are no external forces acting on the charges in the metal to generate a current. A current only flows in a metal when there is an electric field present to move the charges. Without an electric field, the charges in the metal remain stationary.
What does an electric current in a metal consists of to move?
An electric current in a metal consists of the movement of free electrons. These electrons are loosely bound to the metal atoms and can move freely throughout the material in response to an applied electric field.
How electric current flow in metal?
Electric current flows in metals due to the movement of free electrons. When a voltage is applied across a metal conductor, the electric field created causes the free electrons to move in the direction of the field, creating a flow of charge which we refer to as electric current.
How can a hot metal produce electricity?
When a hot metal is placed in a magnetic field, its electrons start moving due to thermal energy, creating an electric current. This phenomenon is known as thermoelectric effect, where temperature difference across the metal creates voltage and generates electricity.
How does electric current travel?
Electric current travels through a closed circuit, flowing from a higher voltage to a lower voltage. It moves through conductive materials such as wires, where the flow of electrons creates the electric current. The rate of flow of electric current is measured in amperes.
What can electricity be created by?
An electric current can be created by moving a magnet through a metal coil.
What does the electric current have?
In metal conductors, electric current is the flow of electrons.
What particles are moving from atom to atom in a wire?
In a metal wire electrons go and go and go! when conducting electric current.
Electric current in a metal conductor is carried by?
Electric current in a metal conductor is carried by a wire. This wire has been specifically adapted to carry this current.
Why there is no current in a metal in the absence of electric field across it?
In the absence of an electric field, there are no external forces acting on the charges in the metal to generate a current. A current only flows in a metal when there is an electric field present to move the charges. Without an electric field, the charges in the metal remain stationary.
What would you expect to conduct an electric current?
the metal
What does an electric current in a metal consists of to move?
An electric current in a metal consists of the movement of free electrons. These electrons are loosely bound to the metal atoms and can move freely throughout the material in response to an applied electric field.
How electric current flow in metal?
Electric current flows in metals due to the movement of free electrons. When a voltage is applied across a metal conductor, the electric field created causes the free electrons to move in the direction of the field, creating a flow of charge which we refer to as electric current.
Is the electric current in a metal conductor is carried by positive ions?
Yes
What element is a good conductors of thermal energy and electric current?
a metal
What is an electric current through a metal?
It's flow of electrons under directing external electric field.
How an electric current is produced?
When charges (means charged bodies) move , then we say that an electric current is produced. If charges remain at rest, current is zero. If charge Q moves through a metal in time t , then current I through metal is: I=Q/t; moreever, electric current can also be produced by rate of change of magnetic field through a metal...,
