Question

Figure below shows a portion of an electric circuit with the currents in amperes and their directions. The magnitude and direction of the current in the portion $PQ$ is

• A. $0A$
• B. $3A$ from $P$ to $Q$
• C. $4A$ from $Q$ to $P$
• D. $6A$ from $Q$ to $P$

Answer 1

The correct option is D $6A$ from $Q$ to $P$

At junction the net current arriving should be equal to the net current leaving

The net current $8+2=4+2+1+x$, $x=3A$

Now at junction Q the net current arriving is $3+3=6A$. This will flow toward P.