$[-/4$ Points$]$

SERPSE$1027\mathrm{.}3\mathrm{.}0$P$\mathrm{.}015.$

The ammeter shown in the figure below reads $2\mathrm{.}58$ A $.$ Find the following.

$(1)$

$($a$)$ current $I_1($in A$)$

$$ A

$($b$)$ current $I_2($in A$)$

$$

$($c$)$ emfE $($in volts$)$

$$ V

$($d$)$ What If$?$ For what value of $E($in volts$)$ will the current in the ammeter read $1\mathrm{.}53$ A $?$

$$ v