2points
two tables each have a mass of 29 kg. if the gravitational force between
them is 4.24 x 1010 n, how far apart are they? g = 6,67 * 10" n (m/ka)
o a. 11.5 m
o b. 12.01 m
o c. 10.23
o d. 9.55 m
sunt

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

Can give more details  

Repeated trials allow you to calculate a mean which can reduce the effect of random errors to make your results more precise.your results will also be reproducible therefore if someone else did the same experiment they'd get the same results which would make your results more reliable.