Electric Current: Crash Course Physics

The video tutorial explains electric current, comparing it to flowing water. It covers how voltage differences generate current using voltaic cells, the historical context of Benjamin Franklin's convention, and the principles of Ohm's Law. The tutorial also discusses resistance, power, and energy transformation in circuits, providing practical examples and calculations.

What is the primary component that flows in an electric current?

• Electrons

• Protons

• Neutrons

• Photons

Who invented the first voltaic cell, which is crucial for generating a continuous electric current?

• Nikola Tesla

• Thomas Edison

• Benjamin Franklin

• Alessandro Volta

What unit is used to measure electric current?

• Watts

• Volts

• Ohms

• Amperes

According to the historical convention, in which direction does electric current flow?

• In both directions

• From positive to negative

• It does not flow

• From negative to positive

What is the relationship between voltage, current, and resistance known as?

• Coulomb's Law

• Ohm's Law

• Faraday's Law

• Newton's Law

What happens to the resistance of certain materials when they are made extremely cold?

• It becomes zero

• It becomes infinite

• It decreases

• It increases

What is the unit of power used in electrical circuits?

• Volts

• Ohms

• Amperes

• Watts