1. A ball falls from a height "h" from a tower. Which of the following statements is true? (20 Points)
the potential energy of the ball remains the same as it falls
the velocity of the ball is constant as it falls
the total kinetic and potential energy of the ball is constant (mechanical energy remains the same)
the kinetic energy of the ball remains the same as it falls

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

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