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$$
\begin{array}{l}{\text { For the circuit shown, find (a) the voltage } v} \\ {\text { (b) the power delivered to the circuit by the }} \\ {\text { current source, }} \\ {\text { (c) the power dissipated in the } 30 \Omega \text { resistor. }}\end{array}
$$

الخطوات

(1) تجميع المقاومات ($$R_{tot}$$)

(2) إيجاد الفولت الكلي $$
\text { ohm's law }
$$

(3) تطبيق مجزأ التيار

$$
R_{eq}=R_{1}+R_{2}=6+10=16 \Omega
$$

$$
R_{eq}=\frac{R_1 R_2}{R_1+R_2}=\frac{64 * 16}{64+16}=12.8 \Omega
$$

$$
R_{eq}=12.8+7.2=20\Omega
$$

$$
R_{eq}=\frac{30 * 20}{30+20}=12 \Omega
$$

$$
V=I R=5*12=60 volt
$$

$$
P_{tot} =I^{2} R=(5)^2*12=300w
$$

$$
P_{tot}=V I=60 * 5=300 \mathrm{w}
$$

$$
P_{30}=I^{2}_{1} R_{30}=(2)^2*30=120w
$$

$$
I_1=\frac{5 * 20}{20 + 30}=2 A
$$

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