Understanding Current Flow

The video tutorial discusses the concepts of conventional and electron current flow, using a dry cell as an example. It explains the potential difference between the positive and negative terminals of a dry cell, which causes electric current to flow in a circuit. The tutorial also covers the historical perspective of current flow, where scientists in the 17th century arbitrarily decided that electric current flows from positive to negative potential, known as conventional current flow. The video concludes with a summary of these concepts.

What causes the electric current to flow in a circuit connected to a dry cell?

• The temperature difference between terminals

• The size of the dry cell

• The presence of a magnetic field

• The potential difference between terminals

In which direction do electrons move in a circuit connected to a dry cell?

• They do not move

• In a circular motion

• From negative to positive terminal

• From positive to negative terminal

Before the electron theory, how did scientists define the direction of electric current flow?

• From negative to positive potential

• From positive to negative potential

• In a random direction

• They did not define it

What is the conventional flow of current?

• Flow of protons from negative to positive

• Flow of electrons from positive to negative

• Flow of electrons from negative to positive

• Flow of protons from positive to negative

Why is the conventional current flow still used today?

• It is more accurate

• It is easier to understand

• It is based on modern electron theory

• It was historically defined and widely accepted