How to calculate the electric field surrounding a charged object?

To calculate the electric field surrounding a charged object, you can use the formula E k Q / r2, where E is the electric field strength, k is the electrostatic constant (8.99 x 109 N m2/C2), Q is the charge of the object, and r is the distance from the object. Simply plug in the values for Q and r to find the electric field strength at a specific point.