GKFix MCQ Question

What is the value of the horizontal component of Earth’s magnetic field in tesla in Example 6.7?

• A. 4 × 10⁻³ T
• B. 4 × 10⁻⁴ T
• C. 0.4 × 10⁻⁴ T
• D. 4 × 10⁻⁶ T