1) 2.00 uC point charge of mass 5.00 g is suspended on a string and placed in a horizontal electric field. The mass is in equilibrium when the string forms a 17.3° angle with the
vertical.
A)
In the space below, sketch a free-body diagram of the problem. Show the vertical and
horizontal components of the tension force in the string.
B)
Find the electric force on the charge in this field.
C)
Find the strength of the electric field.

Ithink d is the right answer. hope this !

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 you give more detail