Which one of the following is used as a Piezoelectric material?

Options

A. Silicones
B. Graphite
C. Silica Gel
D. Quartz

Explanation

To determine which material is used as a piezoelectric material, we can follow these steps:

### Step 1: Understand the Definition of Piezoelectric Materials
A piezoelectric material is one that generates an electric current when subjected to mechanical stress. This phenomenon is known as the piezoelectric effect.

**Hint:** Remember that the key characteristic of piezoelectric materials is their ability to convert mechanical energy into electrical energy.

### Step 2: Identify the Mechanism Behind the Piezoelectric Effect
When mechanical stress is applied to a piezoelectric material, the positive and negative charge centers within the material shift. This shift creates an electric field, which in turn generates an electric current.

**Hint:** Focus on the relationship between mechanical stress and the movement of charge centers in the material.

### Step 3: Consider Examples of Piezoelectric Materials
One common example of a piezoelectric material is quartz. Quartz is known for its durability and heat resistance, making it suitable for various electronic applications.

**Hint:** Think about materials that are commonly used in electronics and have properties that allow them to withstand stress.

### Step 4: Analyze the Options Provided
If the question provides multiple options, compare each option against the characteristics of piezoelectric materials. In this case, we conclude that quartz is a well-known piezoelectric material.

**Hint:** Look for materials that are frequently mentioned in the context of electronics and mechanical applications.

### Conclusion
Based on the understanding of piezoelectric materials and the example provided, we can confidently state that quartz is a piezoelectric material.

**Final Answer:** Quartz is used as a piezoelectric material.