Trivia - Photoelectric Effect

If the photons/radiation is used to overcome the work function, why do we use a battery in the circuit?

Or in other words, where does the work done by the battery goes ?

Question

Trivia - Photoelectric Effect

If the photons/radiation is used to overcome the work function, why do we use a battery in the circuit?

Or in other words, where does the work done by the battery goes ?

anonymous · Answer

Battery creates a constant electrical field which makes flow electrons from one side to the other. So an electrical current is generated at the circuit.

lastdaywork · Answer

Answer it this way -
Due to the presence of battery, chemical energy is converted into _____________

anonymous · Answer

heat energy...  and also if the circuit includes an ampere meter, battery also works done on the ampere meter' coil.  (analog ampere meter.)

anonymous · Answer

work done by battery is converted to kinetic energy

so light energy is used to overcome workfunction.. remaining light energy comes off as kinetic energy (so u do have a photocurrent EVEN WITHOUT a battery)
and the chemical energy is used up to accelerate the charges and thereby FURTHER increasing the kinetic energy of the electrons

lastdaywork · Answer

^^ @oksuz_