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SERCP$1118\mathrm{.}4.$OP$\mathrm{.}020.$

The figure below shows with two batteries and three resistors. The potential difference across the batteries and the resistance of each resistor is given in the figure.

$($a$)$ What is the current $($in A $)$ in the $2\mathrm{.}00$ resistor? $($Enter the magnitude.$)$ equations and three unknowns. Be careful of sign rules in your equations. A

$($b$)$ What is the potential difference $($in $V)$ between points a and $b,$ that is$,v=v_b-v_a?$ found in part $($a$)?$ Be careful of sign rules when finding potential differences along this path. $V$

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