Physics 100B - General Physics II » Spring 2022 » Pre-Class 11

Need help with your exam preparation?

Existing Quiz Clients Login here
Question #1
Which of the following statements are true concerning electromagnetic induction?
A.   It is possible to induce a current in a closed loop of wire without the aid of a power supply or battery.
B.   It is possible to induce a current in a closed loop of wire by changing the orientation of a magnetic field enclosed by the wire.
C.   It is possible to induce a current in a closed loop of wire located in a uniform magnetic field by either increasing or decreasing the area enclosed by the loop.
D.   All of the these
E.   It is possible to induce a current in a closed loop of wire by changing the strength of a magnetic field enclosed by the wire.
Question #2
A circular loop of wire lies flat on a level table top. A bar magnet is held stationary above the circular loop with its north polepoint downward. As viewed from above, in what direction does the induced current flow in the loop of wire?
A.   An induced current flows clockwise in the loop of wire.
B.   An induced current flows counterclockwise in the loop of wire.
C.   The direction of the induced current cannot be determined from the given information.
D.   No current is induced in the loop of wire.
Question #3
A circular loop of wire lies flat on a level table top in a region where the magnetic field vector points straight upward. Themagnetic field suddenly vanishes. As viewed from above, in what direction does the induced current flow in the loop of wire?
A.   An induced current flows counterclockwise in the loop of wire.
B.   No current is induced in the loop of wire.
C.   An induced current flows clockwise in the loop of wire.
D.   The direction of the induced current cannot be determined from the given information.

Need help with your exam preparation?

Existing Quiz Clients Login here