Q: The indication of the negative or positive pole of an electric current is?

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We call this Conventional Current Flow, where imaginary positively charged particles are repelled away from a positive charge and attracted towards a negative charge.The reality is that electrons are actually flowing through the conductor. Electrons are negatively charged particles and flow from negative to positive. It's just easier to think of a positive current flowing than a negative current.

it accelerate the motion of electron emitted by the filament if given a positive charge, similarly if negative voltage to grid the current flow through the grid is reduced. the more positive grid shows less current.

Electrical current in copper is the flow of electrons which are negaitve charge particles. In a typical battery, electrons flow from the negative (bottom) side to the positive (top, nipple) side. However, the engineering convention is to call the "plus" side of the battery the source so current is said to flow from the plus side to the negative side -- which is the opposite to the physical flow of electrons.

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Yes. Electrons always flow from the negative pole to the positive pole. In a Direct current(DC) circuit, one pole is always negative, the other pole is always positive and the electrons flow in one direction only. In an alternating Current (AC) circuit the two poles alternate between negative and positive and the direction of the electron flow continually reverses. In DC circuits (e.g. for a battery) positive is usually marked red and negative is usually marked black, but other color schemes are very common in automotive and telecommunications systems. In AC systems which are at no point connected to earth (unlike domestic mains wiring where the neutral is commonly earthed at substations and generators) polarity is not important as the two wires alternate polarity many times per second.

Related questions

positive and negative Alternating current and direct current.

positive and negative Alternating current and direct current.

No electric charges may be positive or negative - electrons have a negative charge; ions have a positive charge.

The ELECTRONS flow from the negative to the positive terminal. But it is considered that the electric current flows from the positive to the negative terminal.

from positive terminal to negative terminal

An electric current flows from negative to positive.

the flow of electrons in a metal is called electric current . the conventional direction of electric current is shown from positive pole to negative pole

From the Positive terminal (+ve) to the negative terminal (-ve).

Its circuit. But this is hard to marry with lightning, which is the path of an electric current.

when a negative and a positive charges attract. or when there is a closed circuit.

Electrons are a negative charge. Using conventional notation current flows from positive to negative poles of a battery, for example. In electron flow convention the electrons flow from negative to positive.

Electrons are a negative charge. Using conventional notation current flows from positive to negative poles of a battery, for example. In electron flow convention the electrons flow from negative to positive.