A device that increases the voltage of an alternating current is called a(n)

Options

A. electric motor
B. galvanoiqeter
C. step-up transformer
D. step-down transformer

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the name of a device that increases the voltage of an alternating current (AC).

2. **Identifying the Device**: In electrical engineering, there are specific devices designed to modify voltage levels in AC circuits. The device that specifically increases the voltage is known as a transformer.

3. **Types of Transformers**: There are two main types of transformers:
- **Step-Up Transformer**: This type increases the voltage from the primary coil to the secondary coil.
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