A 1.0 Kg object, A, with a velocity of 4.0ms-1 to the right, strikes a second object, B, of mass 3.0 Kg, originally at rest. In the collision, A is deflected

from its original direction through an angle of 50°; its speed after the

collision is 2.0ms-1. Find the angle between B’s velocity after the collision

and the original direction of A, and find the speed of B after collision​

Amplify and switch electrical power and electronic signals

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