Kirchoff's law of junction is also called the law of conservation of

Options

A. energy
B. charge
C. momentum
D. angular momentum

Answer

**Step-by-Step Solution:**

1. **Understanding Kirchhoff's Law of Junction**: Kirchhoff's Law of Junction, also known as Kirchhoff's Current Law (KCL), states that the total current entering a junction must equal the total current leaving the junction. This is based on the principle of conservation of charge.

2. **Applying the Law**: If we denote the currents entering the junction as I1 and I2, and the current leaving the junction as I3, we can express this relationship mathematically as:
\[ I1 + I2 = I3 \]
Alternatively, rearranging gives:
\[ I1 + I2 - I3 = 0 \]

3. **Interpreting the Law**: This equation shows that the sum of currents at a junction is zero, which implies that charge is conserved. If charge enters the junction, it must also leave the junction, ensuring that charge does not accumulate at the junction.

4. **Conclusion**: Therefore, Kirchhoff's Law of Junction is also referred to as the law of conservation of charge, as it reflects the principle that electric charge is neither created nor destroyed at a junction.

**Final Answer**: Kirchhoff's Law of Junction is also called the law of conservation of charge.

---