2. Consider the collection of four charges B,C,D and E shown below. The magnitud

Question

2. Consider the collection of four charges B,C,D and E shown below. The magnitude of each charge is 1nC and the side of one small square is 0.2m. Remember that the electric potential is V=k(q/r).

Calculate the electric potential at point A due to charge B.

2. Consider the collection of four charges B,C,D and E shown below. The magnitude of each charge is 1nC and the side of one small square is 0.2m. Remember that the electric potential is V=k(q/r). Calculate the electric potential at point A due to charge B.

Explanation / Answer

The potential on A due to B ansd C are equal because B and C are equal distance from A with equal charges

we know the electric potential at point is: V=k(q/r)

where k is constant k=1/4*(pi)*(epsilon)=9*109Nm2/C2

VBA is potential on A due to B

r=0.2 distance between A and B,q=1nC

VBA =k*1nC/0.2 = 5k nVolts

=5 * 9 * 109 * 10-9 Volts

=45Volts

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