1 Answer
The formula for the electric field (E) created by a point charge is:
\[
E = \frac{k \cdot |q|}{r^2}
\]
Where:
The electric field points away from a positive charge and toward a negative charge.
\[
E = \frac{k \cdot |q|}{r^2}
\]
Where:
- E is the electric field (measured in newtons per coulomb, N/C),
- k is Coulomb's constant, approximately \(8.99 \times 10^9 \, \text{NĀ·m}^2/\text{C}^2\),
- q is the charge that is creating the electric field (measured in coulombs, C),
- r is the distance from the charge to the point where the electric field is being measured (measured in meters, m),
- The |q| indicates the magnitude of the charge, as the electric field depends on the size of the charge but not on its sign (positive or negative).
The electric field points away from a positive charge and toward a negative charge.