Per fer una ecografia, la màquina d’ultrasons emet ones sonores que viatgen pel cos del pacient a una velocitat de 1.540 m/s. Quina magnitud mesura la màquina per
calcular la distància a la que es troba l’òrgan del cos que es vol estudiar?

Ohm's law tells you that i = v/r where v is equivalent voltage and r is equivalent resistance of the circuit
since all circuits have the same voltage, your question is really asking which circuit has the lowest total resistance, since the lower the resistance, the higher the current
circuit a has a resistance of 5 ohms; circuit c is in series so has a resistance of 10 ohms; circuit b is in parallel and therefore has a resistance of 2.5 ohms (review your notes on adding resistances in parallel and series); therefore b has the highest current

+10 that is always the common denominator

Hello,your answer would be iron! plz mark me brainliest! hope this !

The actual answer is c force stays the same while direction changes