Coulomb's Law (Electric Force) Video Lessons

Video Thumbnail

Concept

Problem: Three point charges are arranged on a line:Charge q3 = +5.00×10-9 C and is at the origin.Charge q2 = −3.00×10-9 C and is at x = +4.00cm. Charge q1 is at x=+2.00cm.What is the magnitude and sign (+ or −) for q1 if the net force on q3 is zero?

FREE Expert Solution

Coulomb's law:

F=kq1q2r2

Δx13 = 2.00 cm(1m/100cm) = 0.02 m

Δx23 = 4.00 cm(1m/100cm) = 0.04 m

The sum of forces on q3 should be zero.

96% (16 ratings)
View Complete Written Solution
Problem Details

Three point charges are arranged on a line:
Charge q3 = +5.00×10-9 C and is at the origin.
Charge q= −3.00×10-9 C and is at x = +4.00cm.
Charge q1 is at x=+2.00cm.
What is the magnitude and sign (+ or −) for q1 if the net force on q3 is zero?

Frequently Asked Questions

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 professor is this problem relevant for?

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