Question

A dielectric with a positive charge of +5 C has 18.75 x 10^18 electrons added to it. What is the net charge of the dielectric in coulombs?

A) +3.75 C
B) -3.75 C
C) +5 C
D) -5 C

Answer 1

The net charge of the dielectric after adding 18.75 x 10^18 electrons is +2.00 C.

Step-by-step explanation:

To calculate the net charge of the dielectric after adding electrons, you need to consider the charge that these additional electrons contribute. The charge of one electron is approximately -1.602 x 10-19 coulombs (C). If we add 18.75 x 1018 electrons, the total negative charge added is:

-1.602 x 10-19 C/electron x 18.75 x 1018 electrons = -3.00 C

Since the dielectric initially had a positive charge of +5 C, the new net charge on the dielectric is:

+5 C - 3.00 C = +2.00 C.