Gce Model Questions Vol1 2025 Physics Question 45
Practice objective / multiple choice question 45 from the 2025 Gce Model Questions Vol1 Physics examination.
A conducting rod of length \(0.30\) m slides without friction on two parallel conducting rails that are \(0.30\) m apart, forming a closed rectangular circuit with total resistance \(0.5\) \(\Omega\). The rails and rod lie in a uniform magnetic field of magnitude \(0.8\) T directed into the page. The rod moves to the right with constant speed \(v\). (i) If the induced current in the circuit is measured to be \(2.0\) A, determine the speed \(v\) of the rod. (ii) Calculate the magnitude of the magnetic force acting on the rod. (iii) Find the mechanical power that must be supplied to keep the rod moving at constant speed and verify that it equals the electrical power dissipated in the resistor.
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About This Question
This is Gce Model Questions Vol1 2025 Physics Question 45. It is one of the objective questions from the 2025 Gce Model Questions Vol1 Physics examination.
Difficulty level: Hard .
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