If the lines of magnetic induction in a region are crowded together, the magnetic field strength in that region will be

Options

A. weak
B. strong
C. infinite
D. zero

Explanation

To solve the question, "If the lines of magnetic induction in a region are crowded together, the magnetic field strength in that region will be?", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Magnetic Field Lines**: Magnetic field lines represent the strength and direction of a magnetic field. The density of these lines indicates the strength of the magnetic field in that region.

2. **Identifying Crowded Lines**: When the lines of magnetic induction are described as "crowded together," it means that the lines are very close to each other. This indicates a high concentration of magnetic field lines in that area.

3. **Analyzing Magnetic Field Strength**: The strength of the magnetic field is directly proportional to the density of the magnetic field lines. Therefore, if the lines are crowded, it implies that the magnetic field strength is high in that region.

4. **Conclusion**: Hence, if the lines of magnetic induction are crowded together, we can conclude that the magnetic field strength in that region will be strong.

### Final Answer:
The magnetic field strength in that region will be **strong**.

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