(a) Explain the statement : "Current is a scalar although we represent current with an arrow". (b) Use Kirchhoff's rules to find the current through $3\text{ }\Omega$ resistor in the circuit shown in the figure : [Circuit diagram showing nodes A, B, C, D, E, F, with a $3\text{ V}$ battery and $4\text{ }\Omega$, $3\text{ }\Omega$, $2\text{ }\Omega$ resistors, and a $5\text{ V}$ battery]