https://file.aiquickdraw.com/mathbot/file/172849135429892e3s51p.jpg

To solve this problem, we can apply **Kirchhoff's Current Law (KCL)**, which states that the total current entering a junction (or node) is equal to the total current leaving the junction. This means that the sum of currents entering the node equals the sum of currents leaving the node.

From the diagram:
- Incoming currents are \( 3 \, \text{A} \) and \( 5 \, \text{A} \).
- Outgoing currents are \( 2 \, \text{A} \), \( 7 \, \text{A} \), and the unknown current \( I \).

Using KCL at the junction \( Q \):
\[
\text{Incoming currents} = \text{Outgoing currents}
\]
\[
3 \, \text{A} + 5 \, \text{A} = 2 \, \text{A} + 7 \, \text{A} + I
\]
Simplifying this:
\[
8 \, \text{A} = 9 \, \text{A} + I
\]
\[
I = 8 \, \text{A} - 9 \, \text{A}
\]
\[
I = -1 \, \text{A}
\]

Since this result is negative, it indicates that the actual direction of the current \( I \) is opposite to what is assumed in the diagram. The magnitude of the current is \( 1 \, \text{A} \).

Therefore, the correct answer for the current \( I \) is **1 A** (but it is flowing in the opposite direction to what is shown).

Do you want more details or have any questions about this process?

Here are 5 related questions:
1. What is Kirchhoff's Voltage Law (KVL), and how does it relate to KCL?
2. Can you apply KCL to a circuit with alternating current (AC)?
3. How do we handle circuits with multiple junctions in KCL?
4. What happens to the current if all resistors have the same resistance?
5. How does the direction of current affect the analysis of circuits using KCL?

**Tip**: When applying KCL, always carefully check the direction of current in the circuit to avoid errors.

Perhatikan gambar titik percabangan arus listrik pada rangkaian berikut! Kuat arus I yang mengalir adalah?

This problem uses Kirchhoff's Current Law (KCL) to calculate the current I at a junction in a circuit with known incoming and outgoing currents. Applying KCL, the sum of currents entering the node equals the sum of currents leaving. This problem is suitable for Grades 9-12.

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