No, microwaves cannot be generated solely using electricity without the use of magnets. Microwaves are a form of electromagnetic radiation that falls within the microwave frequency range, typically around 2.45 gigahertz (GHz). In order to generate microwaves, an appliance needs a component called a magnetron, which combines the use of both electricity and magnets.
The magnetron is the essential part of a microwave oven that converts electrical energy into microwave radiation. It consists of a vacuum tube with a heated cathode and several magnetic components. When an electric current is passed through the magnetron, the interaction between the electric and magnetic fields within the tube leads to the generation of microwave radiation.
The magnetic field in the magnetron helps control the movement of electrons, which, when combined with the electrical energy, causes the rapid oscillation of the electrons and the emission of microwave radiation. This process is necessary for the magnetron to produce the microwaves used in cooking and heating food.
Therefore, to generate microwaves, both electricity and magnets are required in the form of a magnetron.