Technician A says that capacitors are often used as in-line fuses. Technician B says that a dielectric strip is used in capacitors. Who is right?

Technician A is incorrect. Capacitors are not used as in-line fuses. They are two different components with different functions. An in-line fuse is a type of electrical fuse that is installed in a line or circuit to protect the wiring from overloads or short circuits. On the other hand, a capacitor is an electronic component that stores and releases electrical energy. It is not designed to act as a fuse.

Technician B is correct. A dielectric is indeed used in capacitors. A dielectric is an insulating material that can be polarized by an applied electric field. When a dielectric is placed in an electric field, electric charges do not flow through the material as they do in a conductor, but only slightly shift from their average equilibrium positions causing dielectric polarization. The dielectric material in capacitors serves to increase the capacitor's ability to store electric charge.

So, only Technician B is right.