Q. Should we all drive electric cars? What are the advantages and disadvantages. This is my physics homework so I need some scientific answers aswell. Thank you :D
Answer
Advantages: Electric cars offer no tailpipe emissions and therefore reduce the amount of smog and C02 in the atmosphere. Many studies have shown the negative health affects associated with air pollution created by internal combustion engines. A recent study from the University of Southern California has found a link between traffic air pollution exposure to autism in children.
In terms of physics, Electric cars are much more efficient than internal combustion engines. At best, internal combustion engines convert 35% of thermal energy from gasoline into motion at the wheels. Electric cars can be as much as 90% efficient. An example would be the Tesla Model S.
Electric cars also provide peak torque instantly and essentially maintain maximum torque through their entire rev range. Gasoline cars on the other hand have to build up to peak torque, and only maintain it for a short period of time, at which point torque decreases as RPMs increase.
Disadvantages: As it stands now, if every car on the road were electric a lot more coal and fossil fuels would be burned to produce enough electricity to support that many cars. Some argue this would be worse for the environment than the effects of internal combustion engines. Many electric car manufacturers debate this point saying a nationwide adoption of electric cars would allow them to evolve and use energy more efficiently, reducing the load on the grid.
Advantages: Electric cars offer no tailpipe emissions and therefore reduce the amount of smog and C02 in the atmosphere. Many studies have shown the negative health affects associated with air pollution created by internal combustion engines. A recent study from the University of Southern California has found a link between traffic air pollution exposure to autism in children.
In terms of physics, Electric cars are much more efficient than internal combustion engines. At best, internal combustion engines convert 35% of thermal energy from gasoline into motion at the wheels. Electric cars can be as much as 90% efficient. An example would be the Tesla Model S.
Electric cars also provide peak torque instantly and essentially maintain maximum torque through their entire rev range. Gasoline cars on the other hand have to build up to peak torque, and only maintain it for a short period of time, at which point torque decreases as RPMs increase.
Disadvantages: As it stands now, if every car on the road were electric a lot more coal and fossil fuels would be burned to produce enough electricity to support that many cars. Some argue this would be worse for the environment than the effects of internal combustion engines. Many electric car manufacturers debate this point saying a nationwide adoption of electric cars would allow them to evolve and use energy more efficiently, reducing the load on the grid.
Electric cars?
lew
I live in the uk, where there is a lot of talk about introducing new electric cars in place of petrol/diesel fueled cars.
I recently read about an electric Range rover and was wondering, do these electric cars offer less performance than petrol/diesel models?
Answer
there have been electric cars that could happily drive at 100mph if you so wished.
Performance has not been the problem, for getting an electric car into production in the past
The main problem was the Oil companies bought up the patents.... It was not in the interests of the Oil Companies to mass produce a car with no need of oil.
But times are changing. We will soon see cars on our roads, with no emissions, some form of car that self charges as you drive.
The technology already exists, dynamos on the axles, solar panels, storage cells are getting more and more efficient.
new super bright LEDs on all the lights will reduce battery drain. The car will be lighter, new alloys and carbon plastics can be as strong as steel.
Imagine an all electric car with lower running cost, lower insurance and tax, perhaps even lower parking costs.
So if you want to see the cars sooner, make the politicians work , All new cars could be electric in less than 10 years, less than 5 if we push the governments and companies to do it.
So whats next????
Electric powered Aircraft? and pollution free skies
Lets make it happen
there have been electric cars that could happily drive at 100mph if you so wished.
Performance has not been the problem, for getting an electric car into production in the past
The main problem was the Oil companies bought up the patents.... It was not in the interests of the Oil Companies to mass produce a car with no need of oil.
But times are changing. We will soon see cars on our roads, with no emissions, some form of car that self charges as you drive.
The technology already exists, dynamos on the axles, solar panels, storage cells are getting more and more efficient.
new super bright LEDs on all the lights will reduce battery drain. The car will be lighter, new alloys and carbon plastics can be as strong as steel.
Imagine an all electric car with lower running cost, lower insurance and tax, perhaps even lower parking costs.
So if you want to see the cars sooner, make the politicians work , All new cars could be electric in less than 10 years, less than 5 if we push the governments and companies to do it.
So whats next????
Electric powered Aircraft? and pollution free skies
Lets make it happen
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Title Post: Should we all drive electric cars?
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