Gce Model Questions Vol1 2021 Physics Question 34
Practice objective / multiple choice question 34 from the 2021 Gce Model Questions Vol1 Physics examination.
A rectangular coil of \(N=200\) turns has sides \(a=0.10\) m and \(b=0.20\) m and rotates uniformly in a uniform magnetic field \(B=0.5\) T with angular speed \(\omega=300\) rad s⁻¹. The coil has an internal resistance \(r=2\) Ω and is connected to an external resistor \(R\). Assuming the induced emf is sinusoidal, determine (i) the value of \(R\) that maximises the average power dissipated in \(R\), and (ii) the corresponding maximum average power (in watts). Give \(R\) in ohms and power to two significant figures.
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About This Question
This is Gce Model Questions Vol1 2021 Physics Question 34. It is one of the objective questions from the 2021 Gce Model Questions Vol1 Physics examination.
Difficulty level: Hard .
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