Question

A certain lightning bolt moves (40.0 , C) of charge. How many fundamental units of charge (|qₑ|) is this?

a) (2.5 X 10¹9) fundamental units
b) (2.5 X 10²0) fundamental units
c) (2.5 X 10²1) fundamental units
d) (2.5 X 10²2) fundamental units

Answer 1

The number of fundamental units of charge in 40.0 C is (2.5 × 10²¹) fundamental units of charge.

Step-by-step explanation:

The unit of charge is the Coulomb (C), and the smallest unit of charge we encounter in normal situations is from the proton (+1.6 × 10-19 C) or the electron (-1.6 × 10-19 C). To find the number of fundamental units of charge in 40.0 C, we need to divide 40.0 C by the charge of one fundamental unit of charge (|qₑ|), which is the charge of an electron or proton. However, the given answer choices are not in scientific notation. The correct answer in scientific notation would be (2.5 × 10²¹) fundamental units of charge.