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# Problem: An oil droplet with 4 excess electrons is held stationary in a field of 1.27x10  4 N/C. What is the radius of the oil drop? (The density of the oil is 824 kg/m3, e = 1.60 x 10 -19 C.)

###### Problem Details

An oil droplet with 4 excess electrons is held stationary in a field of 1.27x10  4 N/C. What is the radius of the oil drop? (The density of the oil is 824 kg/m3, e = 1.60 x 10 -19 C.)

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Coulomb's Law (Electric Force) concept. You can view video lessons to learn Coulomb's Law (Electric Force). Or if you need more Coulomb's Law (Electric Force) practice, you can also practice Coulomb's Law (Electric Force) practice problems.

What is the difficulty of this problem?

Our tutors rated the difficulty ofAn oil droplet with 4 excess electrons is held stationary in...as medium difficulty.

How long does this problem take to solve?

Our expert Physics tutor, Douglas took 9 minutes and 26 seconds to solve this problem. You can follow their steps in the video explanation above.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Kocurek's class at TCC.