JEE PHYSICS UNIT 13
QUIZ NO 2
TOTAL QUESTIONS = 20


1. A proton and a deuteron having the same kinetic energy enter a region of uniform magnetic field perpendicular to their velocities. The ratio of the radii of their circular paths is


2. A long straight wire of radius a carries a steady current I. The current is uniformly distributed across its cross-section. The ratio of the magnetic field at a/2 to that at a is


3. An electron is projected with uniform velocity along the axis inside a current-carrying long solenoid. The force on the electron is


4. A charged particle moving in a magnetic field experiences a force. This force is maximum when the angle between the velocity of the particle and the magnetic field is


5. The magnetic field at the center of a circular loop of radius R carrying current I is


6. A current-carrying loop is placed in a uniform magnetic field. The torque acting on it is maximum when the plane of the loop is


7. A long straight conductor with a semicircular arc of radius R carries a current I. The magnetic field at the center of the arc is


8. Two parallel wires carrying currents in the same direction attract each other due to


9. A charged particle enters a uniform magnetic field with its velocity perpendicular to the field. Its path will be


10. The magnetic moment of a current-carrying circular loop is proportional to


11. A solenoid of length L and N turns carries a current I. The magnetic field inside the solenoid is


12. The force per unit length between two parallel current-carrying conductors separated by a distance d is


13. A rectangular loop of wire carrying a current I is placed in a uniform magnetic field B. The torque acting on the loop is given by


14. The magnetic field due to a small current element is given by


15. A proton moving with a constant velocity passes through a region of space without any change in its velocity. If E and B represent electric and magnetic fields, respectively, this implies that


16. A circular loop of radius R carries a current I. The magnetic field at a point on the axis of the loop at a distance x from the center is proportional to


17. A long straight wire carries a current I. The magnetic field at a distance r from the wire is


18. A charged particle moves in a circular path in a uniform magnetic field. The frequency of revolution is independent of


19. The magnetic flux through a surface is maximum when the angle between the magnetic field and the normal to the surface is


20. A current-carrying conductor is placed in a magnetic field. The maximum force is experienced when the angle between the conductor and the magnetic field is



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