Neco Model Questions Vol1 2018 Physics Question 49
Practice objective / multiple choice question 49 from the 2018 Neco Model Questions Vol1 Physics examination.
A rectangular coil of \(N = 50\) turns, each side \(0.20\ \text{m}\) long, rotates uniformly in a uniform magnetic field of magnitude \(B = 0.50\ \text{T}\). The coil rotates at \(60\ \text{rev min}^{-1}\) with its plane initially perpendicular to the field. (i) Determine the maximum emf induced in the coil. (ii) If a resistor of \(R = 10\ \Omega\) is connected across the coil, calculate the average electrical power dissipated in the resistor. (iii) Assuming negligible friction, find the average torque that must be applied to keep the coil rotating at the given speed.
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About This Question
This is Neco Model Questions Vol1 2018 Physics Question 49. It is one of the objective questions from the 2018 Neco Model Questions Vol1 Physics examination.
Difficulty level: Hard .
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