Classify the following hypothetical perpetual motion machines as being perpetual motion machines of the first kind $(A)$ or the second kind (B).
-(a) An electric car runs off a battery which drives the front wheels. The car's rear wheels drive a generator which recharges the battery.
A) first kind
B) second kind

Question

Quizplus · Accepted Answer

A perpetual motion machine of the first kind violates the first law of thermodynamics by creating energy from nothing, as in the case of the electric car that supposedly recharges its own battery indefinitely without any external energy source.

Classify the Following Hypothetical Perpetual Motion Machines as Being Perpetual (A)(A)(A)

Classify the Following Hypothetical Perpetual Motion Machines as Being Perpetual $(A)$