Waec Model Questions Vol1 2018 Physics Question 4
Practice objective / multiple choice question 4 from the 2018 Waec Model Questions Vol1 Physics examination.
A magnetic field is produced by a current-carrying wire. If the current in the wire is increased from 2 A to 6 A, and the distance from the wire to a point in the magnetic field is 0.1 m, calculate the change in the magnetic field strength at that point. Use the formula B = (μ₀ * I) / (2π * r), where μ₀ = 4π × 10⁻⁷ Tm/A.
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About This Question
This is Waec Model Questions Vol1 2018 Physics Question 4. It is one of the objective questions from the 2018 Waec Model Questions Vol1 Physics examination.
Difficulty level: Hard .
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