A network of resistors is connected to a 16 V battery with an internal resistance of $1\Omega$, as shown in the figure. The equivalent resistance of the network is:

$1.<mspace\; width="1em"></mspace>4\Omega$
$2.<mspace\; width="1em"></mspace>5\Omega$
$3.<mspace\; width="1em"></mspace>7\Omega$
$4.<mspace\; width="1em"></mspace>2\Omega$

A network of resistors is connected to a 16 V battery with an internal resistance of $1<mspace\; width="1em"></mspace>\Omega$, as shown in the figure. The current in $1<mspace\; width="1em"></mspace>\Omega$ resistor between B and C will be:

$1.<mspace\; width="1em"></mspace>4<mspace\; width="1em"></mspace>A$
$2.<mspace\; width="1em"></mspace>2<mspace\; width="1em"></mspace>A$
$3.<mspace\; width="1em"></mspace>1<mspace\; width="1em"></mspace>A$
$4.<mspace\; width="1em"></mspace>3<mspace\; width="1em"></mspace>A$