Two positive point charges +4.00 μC and +2.00 μC are placed at the opposite corners of a rectangle as shown in the figure.(k = 1/4πε0 = 8.99 × 109 N • m2/C2) 
(a)What is the potential at point A (relative to infinity)due to these charges?
(b)What is the potential at point B (relative to infinity)due to these charges?
Definitions:
Directional
Pertaining to a hypothesis or research that specifies the direction of an expected relationship or difference between variables.
Alternative Hypothesis
The hypothesis stating there is a significant difference or effect, tested against the null hypothesis.
T Statistic
A value used in statistical analysis that helps determine if there is a significant difference between the means of two groups.
One-tailed
A statistical test hypothesis that specifies the direction of the expected difference or relationship.
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