Consider the following figure.

$($a$)$ Find the equivalent resistance between points a and $b$ in the figure. $)=(20,0$

$$

$($b$)$ Calculate the current in each resistor if a potential difference of $60\mathrm{.}0$ V is applied between points a and $b.$

$A$

$I(4\mathrm{.}00)=$

$I(7\mathrm{.}00)=$

$A$

$I(20\mathrm{.}0)=$

$A$

$I(9\mathrm{.}00)=$

$=$

$7A$