Lecture 1 - Current, Voltage & Resistance - 3rd sec

At the end of this lecture, the student will be able to:

Understand the concept of electric current, its unit, and its direction.

Explain the potential difference between two points.

Understand the concept of the electromotive force (emf) of a source.

Explain electrical resistance, the factors affecting it, and its relation to electric current

Understand electrical resistivity, electrical conductivity, and the relationship between them.