Question

Earth is the source of __________

(a) An infinite positive and negative charge

(b) Positive charge

(c) Negative charge

(d) Zero charge

I had been asked this question during an interview.

The origin of the question is Basic Properties of Electric Charge topic in section Charges and Fields of Physics – Class 12

Answer 1

Right option is (a) An infinite positive and negative charge

For explanation I would say: Earth can be considered as an infinite source of positive and negative charges. This can be justified by the fact that if we connect any positive or negatively charged body to the ground, all of its charges will go to earth.