The amount of charge on each plate is equal to 0.9 Coulombs.
<u>Given the following data:</u>
To calculate the amount of charge on each plate:
<h3>The formula for work done.</h3>
Mathematically, work done in moving a charge is given by this formula:

<u>Note:</u> The work done by an external force equals the change in potential energy for the charges that were moved.

But, 
Now, the work done becomes:

Making q the subject of formula, we have:

Charge, q = 0.9 Coulombs.
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