Q15Q A student said, 鈥淲hen you touc... [FREE SOLUTION]

Chapter 14: Q15Q (page 579)

A student said, 鈥淲hen you touch a charged piece of metal, the metal is no longer charged: all the charge on the metal is neutralized.鈥� As a practical matter, this is nearly correct, but it Isn鈥檛 exactly right. What鈥檚 wrong with saying that all the charge on the metal is neutralized?

Short Answer

Expert verified

The saying is wrong because the charge on metal is positive.

Step by step solution

Concept/Significance of charge on a particle

The electrical charge is a feature of some elementary particles that causes them to interact, resulting in a variety of material phenomena.

Explanation of the statement

When it touches a charged piece of metal, the negatively charged object attracts positive ions from the skin, and the object redistributes its charge almost neutralizing the excess negative charge on the object.} {Similarly, a positive metal surface would attract negative ions from the skin, which give up an electron to the metal. The body acquires a net positive charge.

Thus, the saying is wrong because the charge on metal is positive.