A charge of #5 C# is at the origin. How much energy would be applied to or released from a # -4 C# charge if it is moved from # ( 8, 2 ) # to #(9 , 6 ) #?
1 Answer
Explanation:
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http://tube.geogebra.org/student/m2354629
We can work out the electric field potential at point R.
Then we work out the electric field potential at point Q.
We can then get the work done in moving a charge of
Potential at point R:
From the diagram you can see that:
So from
Potential at point Q:
From the diagram you can see that:
So from
So the potential difference
The work done in bringing a charge of
This means work would have to be applied to the charge.
There are no units of distance given. If you were using metres then