HOw many electrons make up a charge of -30 micro coulombs???
a micro is 10^-6 or one millionth
so we are talking about -30 *10^-6 coulombs
the charge on the electron is -1.6 *10^-19 Coulombs
so N electrons * (-1.6*10^-19 coulombs/1 electron) = -30 *10^-6 coulombs
so N = 30 *10^-6 /1.6*10^-19
that is (30/1.6) * 10^13
which is (3/1.6) *10^14
which is 1.875 * 10^14 electrons
To determine the number of electrons that make up a charge of -30 microcoulombs, you need to know the charge of an electron. The charge of an electron is approximately -1.602 x 10^-19 coulombs.
To find the number of electrons, you can use the following formula:
Number of electrons = Total charge / Charge of one electron
Substituting the values:
Number of electrons = -30 μC / -1.602 x 10^-19 C
Now, convert -30 μC into coulombs (C):
1 μC = 10^-6 C
So, -30 μC = -30 x 10^-6 C = -3 x 10^-5 C
Number of electrons = -3 x 10^-5 C / -1.602 x 10^-19 C
Simplifying the expression:
Number of electrons = 1.872 x 10^14 electrons
Therefore, a charge of -30 microcoulombs is equivalent to approximately 1.872 x 10^14 electrons.
To determine the number of electrons that make up a charge of -30 microcoulombs, we need to use the relationship between charge and the elementary charge.
1. The elementary charge (e) is the charge carried by a single electron, which is approximately 1.602 × 10^-19 coulombs.
2. To find the number of electrons, we need to divide the total charge by the elementary charge:
Number of electrons = Total charge / Elementary charge
Number of electrons = -30 × 10^-6 coulombs / (1.602 × 10^-19 coulombs)
Number of electrons ≈ -1.872 × 10^13
Note: The negative sign indicates that we are dealing with a negative charge. The approximate number of electrons is -1.872 × 10^13, which means the charge of -30 microcoulombs is equivalent to approximately 1.872 × 10^13 electrons.