When you walk on a woolen carpet and bring your finger near the metallic handle of a door an electric shock is produced. This is because
[amp_mcq option1=”charge is transferred from your body to the handle” option2=”a chemical reaction occurs when you touch the handle” option3=”the temperature of the human body is higher than that of the handle” option4=”the human body and the handle arrive at thermal equilibrium by the process” correct=”option1″]
This question was previously asked in
UPSC NDA-1 – 2015
When you walk on a woolen carpet, friction between your shoes and the carpet causes charge separation, resulting in a build-up of static electric charge on your body (triboelectric effect). When you then touch a conductive object like a metallic door handle, this accumulated charge rapidly transfers from your body to the handle, creating a momentary electric current which you perceive as a shock.
Static electricity build-up due to friction and subsequent sudden discharge is the cause of the electric shock.