Friction is a source of what type of electricity?

Friction is a source of static electricity because it involves the transfer of electrons between materials when they come into contact and then separate. This process results in an imbalance of electrical charges, where one object becomes positively charged and the other negatively charged. The classic example is rubbing a balloon on your hair, which transfers electrons and generates a static charge.

In contrast, current electricity refers to the flow of electric charge through a conductor, typically driven by a voltage source. Dynamic electricity, while not commonly referenced in scientific terms, generally means the movement of electrical charges, which aligns more with current electricity. Potential electricity relates to the stored electrical energy in an object due to its position in an electric field, rather than the phenomenon caused by friction. Static electricity therefore specifically pertains to charges generated through contact and separation, reinforcing why it is the correct answer.