In ordinary laboratory circuits, charges uC (microcoulomb) and nC (nanocoulomb) range are common. How many excess electrons must you add to an object to give it a charge of (a) -2.50 uC (b) -2.50 nC.
Divide both numbers by the electron charge (-1.6*10^-19 C) to get your answers.
Please show your work if you require further assistance. I will not be responding to any more of your questions unless work or some thought process is shown.
ok, well I would have some thought process if I had any idea how to do any of these! I am not asking for just the answer I am asking for some guidance on where to start just a little hint! physics is by far not one of my strong points.
like^
To calculate the number of excess electrons required to give an object a particular charge, we need to know the charge of a single electron. The charge of an electron is approximately -1.602 x 10^-19 C.
(a) To calculate the number of electrons needed to give an object a charge of -2.50 uC, we can divide the given charge by the charge of a single electron:
Number of electrons = (-2.50 uC) / (-1.602 x 10^-19 C)
To simplify the calculation, convert -2.50 uC into coulombs:
-2.50 uC = -2.50 x 10^-6 C
Number of electrons = (-2.50 x 10^-6 C) / (-1.602 x 10^-19 C)
Using scientific notation, we can rewrite this as:
Number of electrons = (-2.50 x 10^-6) / (-1.602 x 10^-19) = 1.561 x 10^13 electrons
Therefore, you would need to add approximately 1.561 x 10^13 excess electrons to the object to give it a charge of -2.50 uC.
(b) Similarly, to calculate the number of electrons needed to give an object a charge of -2.50 nC, we can divide the given charge by the charge of a single electron:
Number of electrons = (-2.50 nC) / (-1.602 x 10^-19 C)
Convert -2.50 nC into coulombs:
-2.50 nC = -2.50 x 10^-9 C
Number of electrons = (-2.50 x 10^-9 C) / (-1.602 x 10^-19 C)
Using scientific notation, we can rewrite this as:
Number of electrons = (-2.50 x 10^-9) / (-1.602 x 10^-19) = 1.561 x 10^10 electrons
Therefore, you would need to add approximately 1.561 x 10^10 excess electrons to the object to give it a charge of -2.50 nC.