## Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)

The electric force on the charged particle will be $1.5~F$
We can write an expression for the original electric force on the charged particle: $F = E~q$ We can write an expression for the new electric force on the charged particle: $F' = (\frac{E}{2})~(3q)$ $F' = 1.5~E~q$ $F' = 1.5 ~F$ The electric force on the charged particle will be $1.5~F$.