A magnet bar with the north pole faced downward is dropped above a horizontal circular coil. Which of the following statements about the induced current is true? (viewed from above) A. The induced current flows in clockwise direction B. The induced current flows in counter-clockwise direction C. The induced current flows first in clockwise and then in counter-clockwise direction D. The induced current flows first in counter-clockwise and then in clockwise direction E. There is no induced current in the coil A current-carrying wire lies on a horizontal table. A circular coil is placed next to the loop. The current vanishes suddenly. What is the direction of the induced current in the coil? A. Clockwise B. Counter-clockwise C. There is no induced current in the coil D. The induced current changes its direction from clockwise to counter-clockwise E. The induced current changes its direction from counter-clockwise to clockwise A rectangular loop of wire is moved at a constant speed from region I to region II and then to region III. Which of the following is true about the magnetic force direction acting on the loop when it crosses the boundary between the regions? Region I→ Region II Region II→ Region III A. Left Right B. Left Left C. Right Right D. Right Left E. Zero Zero A mass M suspended from a string L undergoes SHM. Which of the following is true about the period of oscillations? A. The period increases with increasing amplitude B. The period increases with increasing mass C. The period increases with decreasing length
A magnet bar with the north pole faced downward is dropped above a horizontal circular coil. Which of the following statements about the induced current is true? (viewed from above) A. The induced current flows in clockwise direction B. The induced current flows in counter-clockwise direction C. The induced current flows first in clockwise and then in counter-clockwise direction D. The induced current flows first in counter-clockwise and then in clockwise direction E. There is no induced current in the coil A current-carrying wire lies on a horizontal table. A circular coil is placed next to the loop. The current vanishes suddenly. What is the direction of the induced current in the coil? A. Clockwise B. Counter-clockwise C. There is no induced current in the coil D. The induced current changes its direction from clockwise to counter-clockwise E. The induced current changes its direction from counter-clockwise to clockwise A rectangular loop of wire is moved at a constant speed from region I to region II and then to region III. Which of the following is true about the magnetic force direction acting on the loop when it crosses the boundary between the regions? Region I→ Region II Region II→ Region III A. Left Right B. Left Left C. Right Right D. Right Left E. Zero Zero A mass M suspended from a string L undergoes SHM. Which of the following is true about the period of oscillations? A. The period increases with increasing amplitude B. The period increases with increasing mass C. The period increases with decreasing length
final-exam-multiple-choice-review-2014-04-25.docx