Question

When a glass rod rubbed with silk, it is said to be positively charged which of the following statements is true?
A) Electrons move from silk to glass
B) Electrons move from glass to silk
C) Proton move from silk to glass
D) Proton move from glass to silk

Answer 1

Hint: When two bodies rubbed together then due to the interaction between them one body acquires positive change and another gets charged by negative charge in the same amount. This is due to transfer of electrons between them. We know if a body have electrons in excess then it will acquire negative charge and if a body have lack of electron then it called positive charged

Complete answer:
We know everything is made of atoms. And atom has three types of particles inside itself electrons and protons and neutron proton and neurons are present inside the nucleus and electrons are revolving around nucleus in their orbits and the number of electrons and protons are equal in any atom electron has negative charge and proton has positive charge in equal amount so in normal conditions whole atom is neutral.

A body is said to be positively charged when it loses electrons to another body and other body which accepts electrons is said to be negatively charged because when a body loses electron then in the nucleus proton gives effective positive charge on that atom and in other body which accepts electrons that have excess of electron so it get negatively charge.

Means it is clear from above explanation if a body has positively charged means it loses electrons or can say it transfers electrons to the other body. Glass rod rubbed with silk, it is said to be positively charged with its mean electron transferred to the silk from glass road.

Hence, option B is correct.

Note: It is clear from above when a body loses electrons it gets positively charged and if a body gains electrons then it gets negatively charged. But sometimes students may be confused why only electrons transfer between two bodies. The answer is because protons and neutrons are present in the nucleus they are not free to move but electrons are free to move so electron transfers when the body rubbed together.