Electron Transfer in Charging by Friction

Steps:

• Friction between shoe and carpet transfers charged particles, typically electrons.
• The shoe gains a positive charge, indicating a loss of negative particles.
• Electrons, being negative, move from the shoe to the carpet.
• This leaves the shoe with a net positive charge due to excess protons.

Why A is correct:

• Positive charge on an object results from losing electrons, as defined by the law of conservation of charge in electrostatics.

Why the others are wrong:

• B: Electrons cannot be positive; charge transfer involves negative electrons.
• C: Transferring negative electrons to the shoe would make it negatively charged.
• D: No such thing as positive electrons; this would not explain the positive charge.

Final answer: A