Question Detail

PHY 102 ELECTROSTATICS Objective Question

Question

What is the primary mechanism for charge transfer when two different bodies are rubbed against each other (charging by friction)?
Options
A Protons are transferred from one body to another.
B Electrons are transferred from the body with less electron affinity to the body with greater electron affinity.
Correct Answer
C Neutral atoms are exchanged between the surfaces.
D Magnetic fields are generated, inducing charge.
Correct Answer

Option B is the correct answer.

Detailed Explanation

The document states: 'When two bodies rub against each other, electrons might be lost by one and gained by the other. The body that has a greater affinity for electron out of the two bodies takes away electrons from the other body, becoming negatively charged in the process while the other body becomes positively charged.'

Hint

The concept of 'electron affinity' is key here, dictating the direction of electron transfer.

Question Info