Magnetics Quiz-02

Magnetics Quiz-02

1. Two particles, each of mass m and charge q , are attached to the ends of a light rigid rod of length 2R. The rod is rotated at constant angular speed about a perpendicular axis passing through its center. The ratio of the magnitudes of the magnetic moment of the system and its angular momentum about the center of the rod is


2. Two particles X and Y having equal charges, after being accelerated through the same potential difference, enter a region of uniform magnetic field and describe circular paths of radii R1 and R2 respectively.  The ratio of the mass of X to that of Y is


3. A battery is connected between two points A and B on the circumference of a uniform conducting ring of radius r and resistance R. One of the arcs AB of the ring subtends an angle θ at the center . The value of the magnetic induction at the center due to the current in the ring is


4. A proton, a deutron and an α-particle having the same kinetic energy are moving in a circular trajectories in a constant magnetic field. If rp , rd and rα denote, respectively the radii of the trajectories of these particles, then


5. A, current I flows along the length of an infinitely long, straight, thin-walled pipe. Then


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