Question

A protein molecule in an electrophoresis gel has a negative charge.The exact charge depends on the pH of the solution, but 30 excesselectrons is typical. What is the magnitude of the electric forceon a protein with this charge in a 1500 N/C electric field?

Answer 1

The magnitude of the electric force on a protein with this charge is
`7.2*10^(-15)\ N`

Step-by-step explanation:

Given that,

Electric field = 1500 N/C

Charge = 30 e

We need to calculate the magnitude of the electric force on a protein with this charge

Using formula of electrostatic force

`F=Eq`

Where, F = force

E = electric field

q = charge

Put the value into the formula

`F=1500*30*1.6*10^(-19)`

`F=7.2*10^(-15)\ N`

Hence, The magnitude of the electric force on a protein with this charge is
`7.2*10^(-15)\ N`