# A charge of #2 C# is at the origin. How much energy would be applied to or released from a # 1 C# charge if it is moved from # ( -2 , 1 ) # to #( -4 , 2) #?

##### 1 Answer

#### Answer:

#### Explanation:

Given two charges:

Find the energy required to move from

Solution:

First let's list the key definition and principles we need to solve this problem:

1)

2)

3)

That is a lot of energy, the reason is that a Coulomb is a huge charge. Typically you would have smaller charges and shorter distances. BTW I made an assumption that all distances are meters your question is silent on that...

The relevant principles are 20 Work formula and distance formula

Technically what we need is:

but by inspection all you need the linear separation