A point charge 4µC is located between point A and point B. If point A is 6m north of the point charge and B is 12m west of the charge, determine the electric potential difference.*1 point9000 V6000 V8000 V4000 V
Question
A point charge 4µC is located between point A and point B. If point A is 6m north of the point charge and B is 12m west of the charge, determine the electric potential difference.*1 point9000 V6000 V8000 V4000 V
Solution 1
The electric potential V at a distance r from a point charge q is given by the formula:
V = k*q/r
where k is Coulomb's constant, 910^9 Nm^2/C^2.
First, we calculate the electric potential at point A:
V_A = kq/r_A = 910^9 Nm^2/C^2 * 410^-6 C / 6 m = 6000 V
Then, we calculate the electric potential at point B:
V_B = kq/r_B = 910^9 Nm^2/C^2 * 410^-6 C / 12 m = 3000 V
The electric potential difference between points A and B is the absolute difference between V_A and V_B:
ΔV = |V_A - V_B| = |6000 V - 3000 V| = 3000 V
However, none of the provided options match this result. Please check the problem statement and the provided options.
Solution 2
The electric potential V at a distance r from a point charge q is given by the formula:
V = kq/r
where k is Coulomb's constant, k = 8.99 x 10^9 Nm^2/C^2.
We can calculate the electric potential at points A and B due to the point charge and then find the difference.
- Calculate the electric potential at point A:
V_A = kq/r_A = (8.99 x 10^9 Nm^2/C^2) * (4 x 10^-6 C) / (6 m) = 5993.33 V
- Calculate the electric potential at point B:
V_B = kq/r_B = (8.99 x 10^9 Nm^2/C^2) * (4 x 10^-6 C) / (12 m) = 2996.67 V
- The electric potential difference between points A and B is the absolute difference between V_A and V_B:
ΔV = |V_A - V_B| = |5993.33 V - 2996.67 V| = 2996.67 V
None of the given options match the calculated value. There might be a mistake in the problem or the given options.
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