Gce Model Questions Vol1 2018 Physics Question 22

Practice objective / multiple choice question 22 from the 2018 Gce Model Questions Vol1 Physics examination.

Gce Model Questions Vol1 2018 Physics Objective / Multiple Choice Hard Difficulty
Question 22 GCE_MODEL_QUESTIONS_VOL1 • 2018 • PHYSICS • objective

A rectangular conducting loop of width \(w = 0.15\ \text{m}\) and length \(l = 0.30\ \text{m}\) and resistance \(R = 5\ \Omega\) is pulled out of a uniform magnetic field \(B = 0.8\ \text{T}\). The loop starts from rest and moves with constant acceleration, leaving the field completely after \(4.0\ \text{s}\).\n\n(a) Find the magnitude of the acceleration.\n\n(b) Determine the induced emf at the instant when exactly half of the loop is still within the field.\n\n(c) Calculate the total energy dissipated as heat in the loop during the whole motion.

Answer Options

A. a = 2.0\times10^{-2}\\ \text{m\\,s}^{-2}, \\; \\varepsilon_{half}=1.5\times10^{-2}\\ \text{V}, \\; E_{heat}=9.5\times10^{-5}\\ \text{J}
Correct Answer B. a = 1.88\times10^{-2}\ \text{m\,s}^{-2}, \; \varepsilon_{half}=1.27\times10^{-2}\ \text{V}, \; E_{heat}=8.6\times10^{-5}\ \text{J}
C. a = 2.5\times10^{-2}\\ \text{m\\,s}^{-2}, \\; \\varepsilon_{half}=1.0\times10^{-2}\\ \text{V}, \\; E_{heat}=1.2\times10^{-4}\\ \text{J}
D. a = 1.5\times10^{-2}\\ \text{m\\,s}^{-2}, \\; \\varepsilon_{half}=1.5\times10^{-2}\\ \text{V}, \\; E_{heat}=7.0\times10^{-5}\\ \text{J}
Correct Answer
B
Correct Option:
a = 1.88\times10^{-2}\ \text{m\,s}^{-2}, \; \varepsilon_{half}=1.27\times10^{-2}\ \text{V}, \; E_{heat}=8.6\times10^{-5}\ \text{J}

About This Question

This is Gce Model Questions Vol1 2018 Physics Question 22. It is one of the objective questions from the 2018 Gce Model Questions Vol1 Physics examination.

Difficulty level: Hard .

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