Waec Model Questions Vol1 2024 Physics Question 14

Practice objective / multiple choice question 14 from the 2024 Waec Model Questions Vol1 Physics examination.

Waec Model Questions Vol1 2024 Physics Objective / Multiple Choice Hard Difficulty
Question 14 WAEC_MODEL_QUESTIONS_VOL1 • 2024 • PHYSICS • objective

A coil with 200 turns is placed in a magnetic field of strength 0.5 T. If the area of the coil is 0.1 m² and the magnetic flux changes from 0.2 Wb to 0.5 Wb in 4 seconds, calculate the induced electromotive force (emf) in the coil. Discuss the implications of Lenz's law in this scenario.

Answer Options

A. -5 V; The induced emf is unrelated to Lenz's law.
Correct Answer B. -15 V; The induced emf opposes the change in magnetic flux.
C. -10 V; The induced emf enhances the change in magnetic flux.
D. -20 V; The induced emf has no effect on the magnetic flux.
Correct Answer
B
Correct Option:
-15 V; The induced emf opposes the change in magnetic flux.

About This Question

This is Waec Model Questions Vol1 2024 Physics Question 14. It is one of the objective questions from the 2024 Waec Model Questions Vol1 Physics examination.

Difficulty level: Hard .

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