Two resistors 5

Two resistors are connected in parallel. The first resistor has a resistance of 2,000 ohms and a current of 4 mA flows through it. The second resistor has a resistance of 1,600 ohms.

1. Draw a circuit diagram.
2. Determine the voltage of the power source.
3. What current flows through the second resistor?
4. What current flows through the unbranched part of the circuit?
5. Determine the equivalent resistance of both resistors.

Final Answer:

U =  8 V
I₂ =  0.005 A
I =  0.009 A
R =  888.89 Ω

Step-by-step explanation:

$$\begin{gathered} R_1=2000\Omega \\ {I}_1=4\text{mA}\to \text{A}=4:1000\text{A}=0.004\text{A} \\ {R}_2=1600\Omega \\ U=R_1\cdot I_1=2000\cdot 0.004=8\text{V} \end{gathered}$$

$I_2=\frac{U}{R_2}=\frac{8}{1600}=0.005\text{A}$

$I=I_1+I_2=0.004+0.005=0.009\text{A}$

$R=\frac{U}{I}=\frac{8}{0.009}=888.89\Omega$

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