Gce Model Questions Vol1 2023 Physics Question 49
Practice objective / multiple choice question 49 from the 2023 Gce Model Questions Vol1 Physics examination.
A rectangular coil of \(N = 200\) turns and area \(A = 0.020\,\text{m}^2\) rotates at constant angular speed \(\omega\) in a uniform magnetic field \(B = 0.50\,\text{T}\). The coil terminals are connected across a resistor of \(R = 10\,\Omega\). The coil is driven so that the average electrical power dissipated in the resistor is \(5.0\,\text{W}\). Assuming the induced emf varies sinusoidally, determine (a) the required angular speed \(\omega\) (in rad s⁻¹) and (b) the torque that the motor must supply (in N·m).
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About This Question
This is Gce Model Questions Vol1 2023 Physics Question 49. It is one of the objective questions from the 2023 Gce Model Questions Vol1 Physics examination.
Difficulty level: Hard .
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