What is the Electrical Potential Between Two Point Charges?

AI Thread Summary
The discussion focuses on calculating the electrical potential at the midpoint between two point charges of 3.4 microC and 6.6 microC, separated by 0.10 m. The formula for electrical potential is correctly stated as V = kQ/r, where k is the Coulomb's constant. A participant mistakenly added a negative sign to the formula, which was pointed out as incorrect since potential increases as one approaches a positive charge. The correct approach emphasizes that the zero potential reference is at infinity. Understanding the relationship between potential and distance from charges is crucial for accurate calculations.
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Two point charges with the values of 3.4 microC and 6.6 microC are separated by 0.10 m. What is the electrical potential at the pont midway between the two point charges? (kc= 8.99 x 10^9 Nm^2/C^2)
Please help me out!
 
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electric potential

The potential at a distance "r" from a point charge of Q is given by:
V = \frac{kQ}{r}
 
Doc Al said:
The potential at a distance "r" from a point charge of Q is given by:
V = \frac{kQ}{r}


V= -kQ/r i just added a negative sign to it to make it more sophesticated
 
sophisticated but wrong :-)

jatin9_99 said:
V= -kQ/r i just added a negative sign to it to make it more sophesticated
The minus sign is incorrect. The potential increases as you get closer to a positive charge. (The zero potential is taken to be at r = ∞.)
 
He might of been thinking about E= -dv/dx... kinda like F= -dU/dx...
 
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