Physics, asked by anupverma16, 1 year ago

what is an electric current? What makes an electric current flow in a wire?

Answers

Answered by lalla129
21
An electric current is a flow of electric charge. In electric circuits this charge is often carried by moving electrons in a wire. It can also be carried by ions in an electrolyte, or by both ions and electrons such as in an ionised gas. ... Electric current is measured using a device called an ammeter



Simply put, a potential difference makes electric charges to flow.
Every charge in the universe wants to attain a lower energy state to become more stable. Also, we know about potential(work done or energy involved in taking a unit charge from infinity to the concerned point) which is more or less a kind of measure of the charge's energy at a certain point. Well, anyway we can't talk about an absolute potential, so we talk about potential difference(in a relative way) between two points. This potential difference serves to decide the direction a charge is going to move in. A lower potential means a relatively lower energy area than a point which has a higher potential. Thus, a positive charge(proton) tends to move towards lower potential point from a higher potential point. Note here that it's a proton that moves from higher to lower potential, an electron does the opposite.

And, thus, because current’s direction is taken in the direction opposite to flow of electrons or in the direction of flow of protons, we can say that the current flows from higher to lower potential.

Now, if you'd ask about how to create a potential difference between two points, then of course you may create an electric field.

Answered by Sweetbuddy
31
HEY BUDDY HERE IS UR ANSWER !!

》An electric current is aflow of electric charge.

》In electric circuits this charge is often carried by moving electrons in awire.

》 It can also be carried by ions in an electrolyte, or by both ions and electrons such as in an ionised gas (plasma) .

》These conduction electrons are the charge carriers in metal conductors.


Hope u like !!


》》 BE BRAINLY 《《
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