Q1.A short bar magnet placed with its axis at 30 with a uniform external magnetic field of 0.25 T experiences a torque of magnitude equal to 4.5×10−2J. What is the magnitude of magnetic moment of the magnet?
Answer : Option BExplaination / Solution: No Explaination.
Q3.A closely wound solenoid of 800 turns and area of cross section 2.5×10−4m2carries a current of 3.0 A.It is free to turn about the vertical direction and a uniform horizontal magnetic field of 0.25 T is applied.Magnitude of torque on the solenoid when its axis makes an angle of 30∘with the direction of applied field
Answer : Option AExplaination / Solution: No Explaination.
Q4.A bar magnet of magnetic moment 1.5 J/T lies aligned with the direction of a uniform magnetic field of 0.22 T. What is the amount of work required by an external torque to turn the magnet so as to align its magnetic moment normal to the field direction?
Answer : Option AExplaination / Solution: No Explaination.
Q5.A bar magnet of magnetic moment 1.5 J/T lies aligned with the direction of a uniform magnetic field of 0.22 T. What is the amount of work required by an external torque to turn the magnet so as to align its magnetic moment opposite to the field direction?
Answer : Option DExplaination / Solution: No Explaination.
Q8.A closely wound solenoid of 2000 turns and area of cross-section 1.6×10−4m2, carrying a current of 4.0 A, is suspended through its centre allowing it to turn in a horizontal plane. What is the magnetic moment associated with the solenoid?
Answer : Option AExplaination / Solution: No Explaination.
Q9.A closely wound solenoid of 2000 turns and area of cross-section 1.6×10−4m2 , carrying a current of 4.0 A, is suspended through its centre allowing it to turn in a horizontal plane. If a uniform horizontal magnetic field of 7.5×10−2 T is set up at an angle of 30 with the axis of the solenoid,force and torque on the solenoid are
Answer : Option AExplaination / Solution: No Explaination.
Q10.A short bar magnet has a magnetic moment of 0.48 J/T .Magnetic field produced by the magnet at a distance of 10 cm from the centre of the magnet on the axis has a direction and magnitude of .
Answer : Option BExplaination / Solution: No Explaination.
Total Question/Mark :
Scored Mark :
Mark for Correct Answer : 1
Mark for Wrong Answer : -0.5
Mark for Left Answer : 0