Question

What happens to the energy put into a machine that does not get used to do useful work?
A. most gets converted to light energy
B. most gets converted to heat energy
C. most gets converted to sound energy
What happens to the energy put into a machine that does not get used to do useful work?
A. most gets converted to light energy
B. most gets converted to heat energy
C. most gets converted to sound energy
@Physics

Answer 1

Heat I guess

Answer 2

depends

Answer 3

But to be honest I think it's stupid question
Heaters are useful too
I'd say Stupid Question

Answer 4

B IS THE RIGHT ANSWER

Answer 5

there are couple of reasons for that because
an energy is converted into light energy with a electric source
and sound when the particles colloid with each other
but as your question was these things where not present!!!!!!!!