All of the following statements about the electromagnetic force are true except which one? a. it is one of the four fundamental forces in the universe. b. it exerts a force on either charged or uncharged particles. c. it obeys the inverse-square law. d. it is produced by—and produces—electric and magnetic fields.

Ans: Option (b) It exerts a force on either charged or uncharged particles.(Partially incorrect)

Explanation:
According to Coulomb's law:


Where and are the charged particles and r is the distance between them.

As you can see it also follows the inverse squared law(Option c).

Lenz's law verifies the option d.

And it is also the one of the four fundamental forces in the universe.

Now we are left with Option (b). As you can see in the Coulomb's law that only charged particles are involved(NOT uncharged particles). Hence option b is correct.