Question

According to modern electron theory, a body gets charged due to
A. Presence of Protons
B. Presence of Nucleus
C. Transfer of electrons
D. Transfer of protons

Answer 1

Hint: In any atom, the particles which are responsible for inducing static charge or current are electrons only. They transfer from one body to another making them charged.

Complete step-by-step answer:
According to this theory, every matter is composed of atoms which contains electrons, protons and neutrons. Both electrons and protons have charge but due to strong nuclear forces the protons are bound together strongly.
Those are only electrons which are available for inducing charge. So, whenever a body gains electrons it gets positively charged and the body that loses electrons gets negatively charged.
Hence, we can conclude that only transfer of electrons is responsible for a body to get charged.

Additional Information
We can also see this changing due to electrons, when we rub scale against the dry hair and then take that near scale to the small pieces of paper, they get attracted towards it. This is happening due to inducing charge on scale. One more also, rubbing of ebonite rod with fur and glass rod with wool, then they both the rods will attract each other.

Note: Keep in mind that the electrons do not produce electricity they just separate from one body and stick to another body. The transfer of electrons from body to body are not to that extent that they will attract other bodies from surrounding.