Using a wheel and axle, a farmer is trying to lin a bucket of water from the bottom of a well. The larger wheel has a radius of 40 cm compared to the ade that has a radius of 10 cm. If a bucket of water is 50 N, then how much effort is
required to raise it?
200 N
12.5 N
2N
500 N

P

Iam on that question know can you tell me the answer i am realy strruglingasap

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