Neco 2020 Physics Question 16

Practice objective / multiple choice question 16 from the 2020 Neco Physics examination.

Neco 2020 Physics Objective / Multiple Choice Hard Difficulty

Question 16 NECO • 2020 • PHYSICS • objective

A rectangular coil of 50 turns and area \(0.02\,\text{m}^2\) rotates in a uniform magnetic field of \(0.5\,\text{T}\). Its angular speed varies with time as \(\omega = \alpha t\) where \(\alpha = 2\,\text{rad\,s}^{-2}\). At \(t = 3\,\text{s}\) determine (i) the magnitude of the induced emf and (ii) the average power delivered to a resistor of \(10\,\Omega\) connected across the coil.

A. 1.00 V; 0.10 W

Correct Answer B. 1.24 V; 0.15 W

C. 1.48 V; 0.22 W

D. 0.62 V; 0.04 W

Correct Answer

Correct Option:

1.24 V; 0.15 W

This is Neco 2020 Physics Question 16. It is one of the objective questions from the 2020 Neco Physics examination.

Difficulty level: Hard .

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