An electric fan is plugged into an outlet and the circuit completed, making the fan blades spin. Which of the following correctly describes this situation?
Electrical energy is transformed into mechanical energy.
Electrical energy is destroyed, and mechanical energy is created.
Mechanical energy is transformed into electrical energy.
Mechanical energy is destroyed, and electrical energy is created.
The correct description of the situation is: Electrical energy is transformed into mechanical energy. When electric current flows into the electric motor of the fan, it creates a magnetic field that causes the motor to rotate, which in turn rotates the blades of the fan. The electrical energy is converted into kinetic energy, which makes the fan blades spin, resulting in the production of mechanical energy.
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Question A woman runs as shown. What main energy conversion occurs?
What main energy conversion occurs? (1 point) Responses Thermal energy changes into mechanical energy because heat provides energy for motion. Thermal energy changes into mechanical energy because heat provides energy for motion. Chemical energy changes into mechanical energy because energy from digestion of food provides energy for the runner’s motion. Chemical energy changes into mechanical energy because energy from digestion of food provides energy for the runner’s motion. Mechanical energy changes into thermal energy because the energy from motion creates heat in the air around the runner. Mechanical energy changes into thermal energy because the energy from motion creates heat in the air around the runner. Mechanical energy changes into chemical energy as the kinetic energy from motion creates reactions in the surrounding air.
The correct answer is: Electrical energy is transformed into mechanical energy.
To understand why, we need to know a little bit about how an electric fan works. When the fan is plugged into an outlet, it is connected to an electrical circuit. This circuit provides a flow of electrons, which is a flow of electrical energy. The fan's motor is designed to convert this electrical energy into mechanical energy, which is the energy associated with motion or movement.
Inside the fan's motor, there are coils of wire that are wrapped around a metal core. When electrical energy flows through these coils, it creates a magnetic field. This magnetic field interacts with magnets inside the motor, causing the motor to spin. This spinning motion is then transferred to the fan blades, causing them to rotate and move the air.
So, in this situation, the electrical energy from the outlet is not destroyed or created. Instead, it is transformed into mechanical energy as the fan blades spin.