In electric heater

Options

A. chemical energy is converted to electrical energy
B. electrical energy is converted to chemical energy
C. heat energy is converted to electrical energy
D. electrical energy is converted to heat energy.

Explanation

### Step-by-Step Solution:

1. **Understanding the Electric Heater**:
An electric heater is a device that converts electrical energy into heat energy. It typically consists of a heating element that generates heat when an electric current passes through it.

2. **Components of an Electric Heater**:
- **Heating Element**: This is usually made of materials with high resistivity and high melting points, such as nichrome. These materials are chosen because they can withstand high temperatures without melting.
- **Power Source**: The electric heater is connected to a power supply which provides the electrical energy needed for operation.

3. **Energy Conversion Process**:
- When the electric heater is turned on, electrical energy flows through the heating element.
- Due to the high resistivity of the material, the electrical energy is converted into heat energy through a process called Joule heating (or resistive heating).
- The heat generated raises the temperature of the heater, which can then be used to heat the surrounding area or objects.

4. **Applications of Electric Heaters**:
Electric heaters are commonly used for various applications such as:
- Heating rooms (space heaters)
- Heating water (water heaters)
- Cooking (electric stoves)

5. **Safety Considerations**:
- It is important to use electric heaters safely to avoid overheating and potential fire hazards. Always follow the manufacturer's instructions and ensure proper ventilation.