In transformer, core is made of soft iron to reduce

Options

A. Hysteresis losses
B. Eddy current losses
C. Force opposing electric current
D. None of the above

Explanation

To solve the question about why the core of a transformer is made of soft iron, we can break it down step by step:

### Step 1: Understanding the Function of the Transformer
A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction. It consists of a primary coil and a secondary coil wound around a core.

**Hint:** Think about how transformers work and the role of the core in the process.

### Step 2: Identifying the Material Used for the Core
The core of a transformer is typically made of soft iron. The choice of material is crucial for the efficiency of the transformer.

**Hint:** Consider the properties of different materials and why soft iron might be preferred over others.

### Step 3: Exploring the Concept of Hysteresis Losses
When alternating current (AC) flows through the primary coil, it creates a changing magnetic field in the core. This changing magnetic field magnetizes and demagnetizes the core material. This process can lead to energy losses known as hysteresis losses.

**Hint:** Recall what hysteresis means in the context of magnetic materials and how it relates to energy loss.

### Step 4: Analyzing the Hysteresis Loop
The hysteresis loop represents the relationship between the magnetic field strength (H) and the magnetic flux density (B) in the material. The area of this loop indicates the energy lost during each cycle of magnetization and demagnetization.

**Hint:** Visualize or sketch the hysteresis loop to understand how the area relates to energy loss.

### Step 5: Comparing Soft Iron with Other Materials
Soft iron has a smaller hysteresis loop area compared to other materials. This means that it experiences less energy loss due to hysteresis when subjected to alternating magnetic fields.

**Hint:** Think about why a smaller area in the hysteresis loop is beneficial for energy efficiency.

### Step 6: Conclusion
Since the core of a transformer is made of soft iron, it effectively reduces hysteresis losses, making the transformer more efficient.

**Hint:** Reflect on the options given in the question and how they relate to the properties of soft iron.

### Final Answer
The core of a transformer is made of soft iron to reduce hysteresis losses.