Question

A sphere is charged with electrons to −5 × 10^−6 C. How many electrons make up this charge? The elemental charge is 1.6 × 10^−19 C.

Answer 1

The number of electrons can be calculated using the formula:

number of electrons = charge / elemental charge

Plugging in the values:

number of electrons = -5 × 10^−6 C / 1.6 × 10^−19 C
number of electrons = -3.125 × 10^13

So, there are approximately -3.125 × 10^13 electrons on the sphere