You are presented with the quiz "what does a light bulb require to produce light?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "alight bulb requires electrical energy to produce light" and "electrical energy refers to energy associated with the flow of electrons". So, what's the best answer to the question?
Choose from:
(1). flow of electrons
(2). flow of neutrons
(3). the sun
(4). adding heat
(5). hydrogen and oxygen
(6). an electron lens
(7). h2o
(8). chemical messengers
Answer:
(1).