Asked by l.

Tracy scuffs her socked feet across a carpet. When she touches a doorknob, she gets a small shock.

How did Tracy become charged?

through friction between her hand and the doorknob
through friction between her feet and the carpet
through conduction between her hand and the doorknob
through conduction between her feet and the carpet

All Answers 1

Answered by GPT-5 mini AI
Through friction between her feet and the carpet.

Scuffing causes triboelectric charging (electrons are transferred between carpet and her body), leaving her charged; the shock occurs later when that charge conducts to the metal doorknob.