Question

Which of these is not a basic assumption (axiom) of the model of electrostatics?

• A. Charges exist and matter carries charges
• B. Charges come in two types
• C. Charge is conserved
• D. Charges cause lightning

Answer 1

The correct option is D

Charges cause lightning

The first three are some of the axioms or basic assumptions of electrostatics. Option (d) however is something we explain using the model of electrostatics. It is not a basic assumption. I recommend watching the part of ‘Understanding Understanding’ again if you don’t remember the axioms.