In the universe, every object repels and attracts another object with some force. We know about a universal gravitational force for large mass objects but for point charge coulomb gives a law by which we can calculate the force and direction of force between two point charges. Now we can understand Coulomb’s law of force in depth.
What is Coulomb’s law?
In simple words coulomb’s law tells force and the direction of force between point charges.
Definition
Coulomb's law describes the force between point charged. This force is directly proportional to the product of the charges' magnitudes and inversely proportional to the square of the distance between them. The force acts along a straight line connecting the two charges.
Formula
The mathematical formula of coulombs law is-
F=k * (|q₁ * q₂|) / r²
Units
In Coulomb's law, in the International System of Units (SI) each term has the following units
- Force (F): Newtons (N)
- Coulomb's constant (k): Newton square meters per square Coulomb (N⋅m²/C²)
- Charge (q₁ and q₂): Coulombs (C)
- Distance (r): meters (m)
How to use coulomb’s law calculator.
Follow these steps
Step 1- you have to enter the first charge q1 in the charge 1 input box and select the unit of charge from the dropdown menu.
Step 2- you have to enter the first charge q2 in the charge 2 input box and select the unit of charge from the dropdown menu.
Step 3- Now enter the distance between the two charges in the input box and select the distance unit from the dropdown menu.
Step 4- if you want to change the Coulomb's law constant you can change otherwise do not change it.
Step 5- now click on the calculate button.
Step 7- the calculated coulomb’s force result is shown in the resultant force box.
Step 8- you can the change unit of the resultant force from the drop-down menu the result will automatically be updated according to the new unit.
Step 9- for new calculations click on the clear button to clear all the fields.