Which subatomic particle identifies the element? A.
protons

B.
electrons

C.
neutrons

D.
atomic mass

A. Protons

Explanation:

Atomic number is an indicator of how many protons an element possesses in its nucleus. We use atomic number to identify an element. For example, carbon has 6 protons and an atomic number of 6.

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete