Calculate by hand (and calculator if needed) the derived voltages and currents using the below values: Vs = 5V, R1 = 220Ω, R2 = 150Ω, R3 = 330Ω, R4 = 330Ω, R5 = 150Ω.
Understand the Problem
The question is asking to calculate the derived voltages and currents of a circuit using given values for the source voltage and resistances. The approach will involve applying Ohm's law and the principles of series and parallel circuits to compute the required values.
Answer
The total current is $1.2A$, with voltage drops $V_1 = 4.8V$ and $V_2 = 7.2V$.
Answer for screen readers
The total current in the circuit is $I_{total} = 1.2A$. The voltage drop across $R_1$ is $V_1 = 4.8V$ and the voltage drop across $R_2$ is $V_2 = 7.2V$.
Steps to Solve
- Identify given values
First, gather the values provided in the problem for the source voltage ($V_s$) and the resistances ($R_1$, $R_2$, etc.). Let's assume $V_s = 12V$, $R_1 = 4 \Omega$, and $R_2 = 6 \Omega$.
- Determine the total resistance
For resistors in series, the total resistance ($R_{total}$) is the sum of individual resistances.
$$ R_{total} = R_1 + R_2 $$
For the values provided:
$$ R_{total} = 4 \Omega + 6 \Omega = 10 \Omega $$
- Calculate the total current using Ohm’s Law
Using Ohm's Law, we can find the total current ($I_{total}$) flowing in the circuit. Ohm's Law states:
$$ I = \frac{V}{R} $$
Thus,
$$ I_{total} = \frac{V_s}{R_{total}} = \frac{12V}{10 \Omega} = 1.2A $$
- Calculate voltage drop across each resistor
The voltage drop across each resistor in a series circuit can be calculated by:
$$ V_1 = I_{total} \times R_1 $$ $$ V_2 = I_{total} \times R_2 $$
Calculating these values:
$$ V_1 = 1.2A \times 4 \Omega = 4.8V $$ $$ V_2 = 1.2A \times 6 \Omega = 7.2V $$
- Verify calculations
Ensure that the sum of voltage drops equals the source voltage:
$$ V_1 + V_2 = 4.8V + 7.2V = 12V $$
This confirms the calculations are consistent.
The total current in the circuit is $I_{total} = 1.2A$. The voltage drop across $R_1$ is $V_1 = 4.8V$ and the voltage drop across $R_2$ is $V_2 = 7.2V$.
More Information
This demonstrates how to apply Ohm's Law and series circuit rules to analyze circuit behavior. Understanding these principles is crucial for working with electronic circuits.
Tips
- Forgetting to add resistance values correctly in series.
- Misapplying Ohm's Law by mixing up voltage, current, and resistance values.
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