Question

You comb your hair on a dry day. The comb gained 2.3 x 108 electrons. Each electron has a charge of -1.6 x 10-19 Coulombs. What is the charge of the comb afterwards?

Group of answer choices

-2.6 x 10-11 C.

-5.6 x 10-11 C.

+5.6 x 10-11 C.

+2.6 x 10-11 C.

Answer 1

The charge of the comb after gaining 2.3 x
`10^8` electrons is calculated by multiplying the number of electrons with the charge per electron. Since there is a small discrepancy in available answer choices, the closest correct answer is -3.68 x
`10^{-11` Coulombs.

To calculate the charge of the comb after it has gained electrons, you can multiply the number of electrons by the charge of each electron.

The charge of the comb is calculated as:

Number of electrons (ne) × Charge per electron (e) = Total charge of the comb (Q)

ne = 2.3 × 108 electrons

e = -1.6 ×
`10^{-19` Coulombs per electron

Q = ne × e

Q = (2.3 ×
`10^8`) × (-1.6 ×
`10^{-19`)

Q = -3.68 ×
`10^{-11` Coulombs

However, the choices provided do not include this result. There might have been a typo or an error in the calculation choices or details. Double-checking the calculation:

Q = 2.3 × 1.6 × 108 ×
`10^{-19`

Q = 3.68 ×
`10^{-11`

Given the options, the closest correct answer for the charge of the comb is -3.68 ×
`10^{-11` C.