Would two large capaciters be cheaper than batteries to drive an electric car. Say a couple of 2 farad capacitors. Capicators would recharge faster too.
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No. The energy density of capacitors will always be lower than chemical batteries. Electric fields across insulating layers cannot compete with chemical bonds.
They'd discharge faster, too. As in a fraction of a second.
John
Maybe if the car weighed a few grams.
John
Yes But it would be quite a ride for a second.
--Sounds like someone from sci.physics.electromag might be fun to talk to. 2 Farads would be a good start for a mass driver, heh.
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