In an electric cell while in use, the change in energy is from:
(a) electrical to mechanical
(b) electrical to chemical
(c) chemical to mechanical
(d) chemical to electrical

Options

A. electrical to mechanical
B. electrical to chemical
C. chemical to mechanical
D. chemical to clectrical

Answer

To solve the question about the energy change in an electric cell while in use, we will analyze the options provided and understand the process that occurs in an electric cell.

### Step-by-Step Solution:

1. **Understanding the Function of an Electric Cell**:
An electric cell converts stored chemical energy into electrical energy. This process is fundamental to how batteries and cells operate.

2. **Identifying the Energy Transformation**:
In an electric cell, chemical reactions occur within the electrolyte. These reactions involve the movement of ions, which leads to a separation of charge and the generation of voltage.

3. **Analyzing the Options**:
- (a) Electrical to mechanical: This is not correct because an electric cell does not convert electrical energy into mechanical energy.
- (b) Electrical to chemical: This is incorrect as well; the cell does not convert electrical energy back into chemical energy while in use.
- (c) Chemical to mechanical: This is also not applicable, as the primary function is not to produce mechanical energy directly.
- (d) Chemical to electrical: This is the correct transformation occurring in an electric cell.

4. **Conclusion**:
The correct answer is (d) chemical to electrical. The chemical energy stored in the cell is converted into electrical energy when the cell is in use.

### Final Answer:
The change in energy in an electric cell while in use is from **chemical to electrical** (Option D).

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