Answer:
When an electric current flows through a circuit, several things happen. One important effect is the generation of light, which in the case of your small toy, causes the flashing lights to illuminate. This phenomenon occurs when the current passes through the components responsible for producing light, such as LED bulbs or incandescent filaments.
Additionally, the flow of electric current produces a heating effect. This occurs when the current encounters resistance in the wires or other components in the circuit. The resistance to the flow of electrons leads to the conversion of electrical energy into thermal energy. This effect is commonly observed in devices like electric heaters or toasters, where the heating element warms up due to the passage of current.
Moreover, when an electric current flows in a circuit, it creates a magnetic field around the conductive elements. This magnetic field can interact with other magnetic fields or conductive materials in the vicinity, resulting in various phenomena. For example, this is how electric motors convert electrical energy into mechanical energy, utilizing the magnetic forces generated by the current.
Overall, the flow of electric current through a circuit leads to the production of light, the generation of heat, and the creation of magnetic fields, all of which have diverse applications in various electrical and electronic devices.