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The given image shows an electrical circuit with two voltage sources and multiple resistors in series and parallel. The task is to determine the current flowing through the circuit, based on the resistances and voltages provided.

Here’s the circuit breakdown:

1. There are two voltage sources:
   - \( 18 \, \text{V} \) on the left
   - \( 12 \, \text{V} \) on the right
   
2. The resistances are:
   - \( 0.5 \, \Omega \) next to the \( 18 \, \text{V} \) source
   - \( 3 \, \Omega \)
   - \( 2 \, \Omega \)
   - \( 0.5 \, \Omega \) next to the \( 12 \, \text{V} \) source

3. Both voltage sources are connected in opposite directions (the polarity of the 12V source is opposite to the 18V source).

### Steps to solve:
1. **Find the total resistance** in the circuit:
   - The resistors in series can be added together.
   
2. **Apply Kirchhoff’s Law** (since we have two sources, Kirchhoff's Voltage Law will help here).

Let's calculate the total current flowing through the circuit. I'll work on the solution and provide the exact current value.The total current flowing through the circuit is **1.0 A** (Ampere).

This result was obtained by first calculating the total resistance of the circuit (which is \( R_{\text{total}} = 6 \, \Omega \)) and then applying Ohm’s Law using the total voltage difference (6V, due to the opposing 18V and 12V sources).

Let me know if you need any further details or have any questions!

Here are 5 related questions to expand your understanding:
1. How would the current change if the resistance of one resistor increased?
2. How can we apply Kirchhoff’s laws to more complex circuits with multiple loops?
3. What is the impact of having resistors in parallel versus in series?
4. How does reversing the polarity of a voltage source affect the circuit’s behavior?
5. What happens to the current if both voltage sources were the same?

**Tip:** Always ensure that you calculate the net voltage in the circuit correctly when dealing with multiple voltage sources with opposite polarity.

Besarnya kuat arus yang mengalir dalam rangkaian adalah...

Learn how to determine the current in a circuit with two voltage sources and multiple resistors in series. This problem covers key electrical concepts, including Ohm’s Law, Kirchhoff’s Voltage Law, and total resistance calculations. Suitable for high school students in Grades 10-12.

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