F = k(Q\u2081Q\u2082) \/ r\u00b2<\/strong><\/div>\nWhere:
\n– F<\/strong> represents the force between the two charges.
\n– k<\/strong> is Coulomb’s constant (~9 x 10^9 Nm\u00b2\/C\u00b2).
\n– Q\u2081<\/strong> and Q\u2082<\/strong> are the magnitudes of the charges.
\n– r<\/strong> is the distance between the charges.<\/p>\nThe electric field at a specific point is related to the force experienced by a charge placed at that point. We can find the electric field at that point by dividing the force experienced by a hypothetical positive test charge by the magnitude of the charge.<\/p>\n
E = F \/ q<\/strong><\/div>\nWhere:
\n– E<\/strong> is the electric field strength.
\n– F<\/strong> is the force experienced by the hypothetical test charge.
\n– q<\/strong> is the magnitude of the hypothetical test charge.<\/p>\nBy combining the above equations, we can find the theoretical value for electric field at a particular point by following these steps:<\/p>\n
1. Determine the distance between the point at which the electric field is to be calculated and the charge producing the field.
\n2. Calculate the force between the charges using Coulomb’s law.
\n3. Select a hypothetical test charge with a known magnitude.
\n4. Determine the force experienced by the test charge at the given point using Coulomb’s law.
\n5. Divide the force by the magnitude of the test charge to find the electric field strength.<\/p>\n
The theoretical value for electric field can be found by dividing the force experienced by a hypothetical test charge by the magnitude of the test charge.<\/strong><\/p>\n