what is the difference between inertia and moment of inertia? b. a particle is positioned at point(2,4) on a grid. will the particle accelerate faster if it is rotated about the x axis or the y axis? assume equal torques are applied in both cases. explain.​

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

It really doesn't matter for any of the questions that you've listed.