Electromagnetic Induction - ASKnLearn

Challenging QuestionsDunman High School (Senior High Physics Department)C1A solid metal cylinder of mass m rolls down parallel metal rails spaced a distance L apartwith a constant acceleration a o (figure on left below). The rails are inclined at an angle θ tothe horizontal. The rails are then connected electrically at the top (via a wire) and immersedin a magnetic field of strength B that is perpendicular to the plane of the rails (figure on rightbelow). If R is the total resistance of the circuit consisting of the cylinder, rails and wire,obtain an expression for the terminal velocity v of the cylinder as it slides down the plane.C2A search coil is a device that can be used tomeasure the magnetic field strength. A coil of Nturns and area A is initially perpendicular to amagnetic field of magnitude B. The coil isconnected to a special type of galvanometer(called ballistic galvanometer) that measures thetotal charge Q that flows through it. To measurethe magnetic field, the coil is suddenly withdrawnfrom the field. If R is the total resistance of thecircuit, obtain an expression for the total chargeQ flowing in the coil.9646 Physics (2012)Topic 16: Electromagnetic Induction 16-25