Kirchhoff's law is a fundamental law in circuit theory that states that the sum of all currents entering and leaving a node is zero. This law is important for understanding how circuits work and for designing efficient and reliable circuits. In this blog post, we will discuss Kirchhoff's law in detail and explore how it affects circuit design. We will also take a look at some examples to help you understand this concept better.

So, what exactly is Kirchhoff's law? In simple terms, it states that the sum of all currents entering and leaving a node is zero. The charge must be conserved in any closed system, which includes an electric circuit. This means that the total current flowing into a node must equal the total current flowing out of that node. If there is any imbalance, it indicates that there is a net flow of charge into or out of the node.

Now that we have a basic understanding of Kirchhoff's law, let's take a look at how it affects circuit design. This law is often used to simplify circuit analysis. By using Kirchhoff's law, designers can reduce the number of unknowns in a circuit. This makes it easier to solve for the desired values. Additionally, this law can be used to find voltage drops across resistors in a circuit.

Following are some of the multiple choice questions on the **Kirchhoffs law** with answers that will help the students in developing their knowledge.

## Kirchhoffs law MCQ

### 1. Which of the following is Kirchhoff’s first law?

### 2. Which of the following is Kirchhoff’s second law?

### 3. Which of the following is the application of Kirchhoff’s law?

### 4. In Kirchhoff’s first law Σi = 0 at the junction is based on the conservation of

### 5. Kirchhoff’s Current Law is based on

### 6. Which of the following field derives Kirchhoff’s loop law?

### 7. Kirchhoff s law is applicable to

### 8. Kirchhoff's law states that:

### 9. The method of Kirchhoff’s law is used to solve the questions with _____.

### 10. _________ method of complex network is used to solve the questions of simple circuits, Kirchhoff’s law, loop analysis, node analysis, superposition theorem and Reciprocity Theorem.

### 11. It is necessary to find ______ of current to solve the circuit according to Kirchhoff’s Laws.

### 12. In any network, the algebra sum of the currents meeting at a junction point is zero, which is Kirchhoff’s Current Law

### 13. AC and DC both types of circuits can use Kirchhoff’s Law.

### 14. With the help of Kirchhoff’s Current Law (KCL) and Kirchhoff’s Voltage Law (KVL), you can find equivalent ________ and ________ of different conductors

### 15. Which of the following is the equation of Kirchhoff’s voltage law?

### 16. Who introduced ohms law?

### 17. Which of the following are the disadvantages experienced by Kirchhoff’s law?

### 18. Which of the following is used for representing Kirchhoff’s equations?

### 19. Identify the first step of mesh analysis?

### 20. Which basic law should be followed to analyse the circuit?

### 21. Which of the following electric parameters do Kirchhoff law calculate?

### 22. Who introduced currents law?

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