Waec Model Questions Vol1 2019 Physics Question 12
Practice objective / multiple choice question 12 from the 2019 Waec Model Questions Vol1 Physics examination.
A rectangular coil of 20 turns has dimensions 0.10 m by 0.20 m. It is pulled with a constant speed of 0.5 m s⁻¹ into a uniform magnetic field of 0.30 T that is perpendicular to the plane of the coil. When exactly half of the coil's area is inside the field, what magnitude of the external force must be applied to keep the coil moving at constant speed? (The coil's resistance is 2 Ω.)
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About This Question
This is Waec Model Questions Vol1 2019 Physics Question 12. It is one of the objective questions from the 2019 Waec Model Questions Vol1 Physics examination.
Difficulty level: Hard .
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