Q3. Figure shows an electric circuit with a voltage and a current variable assigned to each of the six devices. Use power balance to find missing quantities for $v_1 = 10 \text{ V}$, $i_1 = -4 \text{ A}$, $i_2 = 4 \text{ A}$, $p_2 = 24 \text{ W}$, $i_3 = 4.25 \text{ A}$, $p_3 = 17 \text{ W}$, $v_4 = 16 \text{ V}$, $i_4 = -250 \text{ mA}$, $i_5 = 500 \text{ mA}$ and $p_5 = -6 \text{ W}$, $v_6 = -12 \text{ V}$, and $p_6 = 9 \text{ W}$.
(1) Are devices 1 and 4 absorbing or delivering power?
(2) Show all missing quantities in engineering notation with units by creating a table, as given below?
(3) Also show that the net power of the circuit is zero.
(4) Redraw the circuit showing positive voltages with appropriate polarities and positive current and directions.
