Identify the choice that best completes the statement or answers the question. The purpose of a car engine is to transform the chemical energy of gasoline into kinetic energy of the car in motion. Gasoline is burned in the engine to create that movement. However, gasoline engines are typically only about 20% efficient. What happens to the rest of the energy released from the burning gasoline? Most of it is destroyed by the process of the gasoline burning. Most of it is changed through chemical reaction to a type of nuclear energy. Most of it is transformed by the engine into electrical energy. Most of it is transferred to the environment in the form of heat.

Most of it is transferred to the environment in the form of heat.

Explanation:

For every system, the law of conservation of energy is applicable which states that the energy of the system remains conserved. Energy can neither be created nor destroyed.

When gasoline is burnt, some of the chemical energy stored in the chemical bonds of gasoline is converted to kinetic energy which is used to drive the vehicle and some of it is lost in the form of heat energy to the surroundings. But the total energy remains conserved.

If a system loses energy, an equivalent amount of energy is gained by surroundings, thus the total energy remains constant.

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current