Waec Model Questions Vol1 2021 Physics Question 32

Practice objective / multiple choice question 32 from the 2021 Waec Model Questions Vol1 Physics examination.

Waec Model Questions Vol1 2021 Physics Objective / Multiple Choice Hard Difficulty
Question 32 WAEC_MODEL_QUESTIONS_VOL1 • 2021 • PHYSICS • objective

A rectangular coil of 20 turns has each side 0.10 m. It moves into a uniform magnetic field of magnitude 0.50 T. The field region is 0.20 m wide. The coil starts from rest and moves with constant acceleration, covering the whole field width in 2.0 s. The coil is connected across a resistor of 5.0 Ω. Determine (a) the maximum induced emf in the coil, and (b) the average electrical power dissipated in the resistor during the motion.

Answer Options

A. Maximum emf = 0.30 V; average power ≈ 1.5 mW
Correct Answer B. Maximum emf = 0.20 V; average power ≈ 2.7 mW
C. Maximum emf = 0.15 V; average power ≈ 3.5 mW
D. Maximum emf = 0.25 V; average power ≈ 2.0 mW
Correct Answer
B
Correct Option:
Maximum emf = 0.20 V; average power ≈ 2.7 mW

About This Question

This is Waec Model Questions Vol1 2021 Physics Question 32. It is one of the objective questions from the 2021 Waec Model Questions Vol1 Physics examination.

Difficulty level: Hard .

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