Gce Model Questions Vol1 2019 Physics Question 38
Practice objective / multiple choice question 38 from the 2019 Gce Model Questions Vol1 Physics examination.
A rectangular coil of \(30\) turns has dimensions \(0.2\ \text{m}\) (width) by \(0.5\ \text{m}\) (height). It moves into a uniform magnetic field of \(0.8\ \text{T}\) with a speed that varies with time as \(v(t)=v_0\left(1-\frac{t}{5}\right)\) for \(0\le t\le5\ \text{s}\), where \(v_0=0.4\ \text{m s}^{-1}\). The side entering the field first is the width \(0.2\ \text{m}\). The coil is connected to a resistor of resistance \(R\). Determine the value of \(R\) (in ohms) such that the total energy dissipated as heat in the resistor during the 5‑second interval is \(12\ \text{J}\).
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About This Question
This is Gce Model Questions Vol1 2019 Physics Question 38. It is one of the objective questions from the 2019 Gce Model Questions Vol1 Physics examination.
Difficulty level: Hard .
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