Question

A person observes that in the winter, his hair stands on end when it is brushed. This is because his hair becomes positively charged. Why does the act of brushing make his hair positively charged?

A Electrons are moved from his hair to the brush.
B Electrons are converted to protons by the thermal energy that results from brushing
C Protons are moved from the brush to his hair.

Answer 1

option (A)

Step-by-step explanation:

When an object loses some electron, it becomes positively charged.

So, when we brush our hair, the electrons transfers from hair to brush, so the hair become positively charged and the brush become negatively charged.

Answer 2

Answer: Option (A) is the correct answer.

Step-by-step explanation:

It is known that when a neutral object is brought closer to a charged object then the neutral atom tends to acquire an opposite charge.

During very dry winter when we comb our hairs then they tend to fly up because negatively charged electrons from the positively charged electrons nuclei of their parent atoms get separated. Hence, normally this positive charge of the nucleus normally attracts and binds to the negatively charged electrons.

Therefore, the net result is neutral but when out of the two charges one gets separated out and accumulates an excess then it is known as static charge whose effects are noticeable.

Thus, we can conclude that the act of brushing make his hair positively charged because electrons are moved from his hair to the brush.