When the magnetic inclination (dip) was measured at various places on earth, in one of the following countries it was found to be zero. Which to be zero. Which one was it ?

Answer

To determine which country has a magnetic inclination (dip) of zero, we need to understand the concept of magnetic inclination and its relation to the Earth's equator.

### Step-by-Step Solution:

1. **Understanding Magnetic Inclination**:
- Magnetic inclination, also known as magnetic dip, is the angle that a magnetic field makes with the horizontal plane. It varies at different locations on Earth.

2. **Magnetic Inclination at the Equator**:
- At the equator, the magnetic field lines are horizontal. Therefore, the magnetic needle (which aligns with the magnetic field) will also rest horizontally, resulting in a magnetic inclination of zero degrees.

3. **Identifying Countries on the Equator**:
- To find a country where the magnetic inclination is zero, we need to identify countries that lie on the equator. The equator passes through several countries, including Brazil, Ecuador, Colombia, Gabon, and others.

4. **Selecting the Correct Country**:
- Among the countries listed, Brazil is one of the countries that lies on the equator. Since the magnetic inclination is zero at the equator, we can conclude that Brazil is the correct answer.

5. **Conclusion**:
- Therefore, the country where the magnetic inclination was found to be zero is Brazil.

### Final Answer:
**Brazil**