PHY 102 Exam 2 | Verified study set | Actual Questions
and Answers | 2026 Updates | 100% correct
Paramagnetism - ANSWER-A paramagnetic material has no magnetic field unless an external
magnetic field is applied to it.
Ferromagnetism - ANSWER-A ferromagnetic material produces a magnetic field even in the
absence of an external magnetic field.
Diamagnetism - ANSWER-Diamagnetism is an induced magnetic field in the opposite direction
to an applied external magnetic field.
A proton moving in a region of a space does not experience any acceleration in the direction of
motion. Which of the following statements is correct with respect to this situation? - ANSWER-
D) The electric field must be zero but not the magnetic field in that region.
A wire is carrying current vertically downward. What is the direction of the force due to Earth's
magnetic field on the wire? - ANSWER-C) horizontally towards the east
Lenz's Law - ANSWER-An induced current always flows in a direction that opposes the change
that caused it
A circular coil of copper wire is lying flat on a horizontal table. A bar magnet is held with its
south pole downward, vertically above the center of the coil. The magnet is released from rest
and falls toward the coil. As viewed from above, you can say that, as it falls, the magnet induces
- ANSWER-B) clockwise current in the loop.
A circular coil of copper wire is lying flat on a horizontal table. A bar magnet is held with its
south pole downward, vertically above the center of the coil. The magnet is kept stationary with
respect to the coil. As viewed from above, you can say that the magnet induces - ANSWER-C) no
current in the loop.
A rectangular coil lies flat on a horizontal surface. A bar magnet is held above the center of the
coil with its north pole pointing down. If the magnet is dropped from this position what is the
direction of the induced current in the coil? - ANSWER-B) counterclockwise
The number of turns in the coil of a generator is reduced by a factor of 2 and at the same time it
is rotated twice as fast keeping other factors constant. What happens to the value of the
maximum induced emf? - ANSWER-D) It stays the same.
and Answers | 2026 Updates | 100% correct
Paramagnetism - ANSWER-A paramagnetic material has no magnetic field unless an external
magnetic field is applied to it.
Ferromagnetism - ANSWER-A ferromagnetic material produces a magnetic field even in the
absence of an external magnetic field.
Diamagnetism - ANSWER-Diamagnetism is an induced magnetic field in the opposite direction
to an applied external magnetic field.
A proton moving in a region of a space does not experience any acceleration in the direction of
motion. Which of the following statements is correct with respect to this situation? - ANSWER-
D) The electric field must be zero but not the magnetic field in that region.
A wire is carrying current vertically downward. What is the direction of the force due to Earth's
magnetic field on the wire? - ANSWER-C) horizontally towards the east
Lenz's Law - ANSWER-An induced current always flows in a direction that opposes the change
that caused it
A circular coil of copper wire is lying flat on a horizontal table. A bar magnet is held with its
south pole downward, vertically above the center of the coil. The magnet is released from rest
and falls toward the coil. As viewed from above, you can say that, as it falls, the magnet induces
- ANSWER-B) clockwise current in the loop.
A circular coil of copper wire is lying flat on a horizontal table. A bar magnet is held with its
south pole downward, vertically above the center of the coil. The magnet is kept stationary with
respect to the coil. As viewed from above, you can say that the magnet induces - ANSWER-C) no
current in the loop.
A rectangular coil lies flat on a horizontal surface. A bar magnet is held above the center of the
coil with its north pole pointing down. If the magnet is dropped from this position what is the
direction of the induced current in the coil? - ANSWER-B) counterclockwise
The number of turns in the coil of a generator is reduced by a factor of 2 and at the same time it
is rotated twice as fast keeping other factors constant. What happens to the value of the
maximum induced emf? - ANSWER-D) It stays the same.
