Which of the following pairs of items will be attracted by one another?

Question

Question 17 options:

A)

A positively charged pith ball and a negatively charged glass rod

B)

A negatively charged pith ball and a negatively charged glass rod

C)

Two positively charged pith balls

D)

Two negatively charged pith balls

Answer 1

The principle of electrostatics states that opposite charges attract and like charges repel each other.

Based on that principle:

A) A positively charged pith ball and a negatively charged glass rod - Will be attracted (opposite charges attract).

B) A negatively charged pith ball and a negatively charged glass rod - Will not be attracted (like charges repel).

C) Two positively charged pith balls - Will not be attracted (like charges repel).

D) Two negatively charged pith balls - Will not be attracted (like charges repel).

Thus, the correct answer is:

A) A positively charged pith ball and a negatively charged glass rod.