Question

The sketch below shows some of the insides of a stereo speaker. Running current through the wire, which is wrapped around the base of the cone, causes the cone to move in and out. Explain how this happens. Be sure to discuss the energy conversions that take place.

Answer 1

Answer:

Explanation:

Speaker is an electrical that is based on the phenomenon of converting electrical energy into sound energy.

It converts electrical signal into audio. When Current flows though the wire which is rounded on a metal, magnetism also arises in it.

This turn the metal into temporary magnet or also known as electromagnet. A permanent magnet is placed just behind the speaker.

With each cycle of current passing the wire, the direction of electromagnet keeps on changing which results into push and pull motion because of the permanent magnet thus creates a vibration.

Energy is conserved in this as electrical energy is converted into sound and magnetic force of push and pull between electromagnet and permanent magnet result into mechanical energy which is the vibration of speakers.

Answer 2

Energy transformation, also termed as energy conversion, is the process of changing energy from one of its forms into another. In physics, energy is a quantity that provides the capacity to perform many works—think of lifting or warming an object. In addition to being convertible, energy is transferable to a different location or object, but it cannot be created or destroyed.

Energy in many of its forms may be used in natural processes, or to provide some service to society such as heating, refrigeration, lighting or performing mechanical work to operate machines. For example, in order to heat your home, your furnace can burn fuel, whose chemical potential energy is thus converted into thermal energy, which is then transferred to your home's air in order to raise its temperature.

In another example, an internal combustion engine burns gasoline to create pressure that pushes the pistons, thus performing work in order to accelerate your vehicle, ultimately converting the fuel's chemical energy to your vehicle's additional kinetic energy corresponding to its increase in speed.

Contents

   1 Entropy and limitations in conversion of thermal energy to other types

   2 Transformation of kinetic energy of charged particles to electric energy

   3 History of energy transformation from the early universe

   4 Examples

       4.1 Examples of sets of energy conversions in machines

       4.2 Other energy conversions

   5 See also

   6 References