A Study of University Students’ Understanding of Simple Electric Circuits Part 2: Batteries, Ohm's Law, Power Dissipated, Resistors in Parallel

SUMMARY RIASSUNTO In this paper the results of a systematic investigation into university students’ misunderstandings of d.c. simple circuit operations are reported. These results provide evidence of various misconceptions present before and after the teaching at university level of the topics on d.c. circuits: a battery as a source of constant current; the wrong interpretation of the junctional relation expressed by Ohm's law; power dissipated;...