Lenz’s Law NEET Questions

Lenz’s Law MCQ Questions

13.
A closed loop is placed with its plane perpendicular to a uniform magnetic field directed out of the page. If the field magnitude is decreasing, the induced current in the loop flows:
A.
No current flows
B.
Alternates direction
C.
Clockwise
D.
Counter-clockwise
ANSWER :
D. Counter-clockwise
14.
A circular loop lies in the plane of the paper with a magnetic field pointing INTO the page. If the field is decreasing steadily, the direction of induced current in the loop is:
A.
No induced current
B.
Radially outward
C.
Counter-clockwise
D.
Clockwise
ANSWER :
D. Clockwise
15.
A rectangular loop is pulled out of a uniform magnetic field region (field pointing into the page) with constant velocity. The direction of induced current in the loop is:
A.
No induced current
B.
First clockwise then counter-clockwise
C.
Clockwise
D.
Counter-clockwise
ANSWER :
C. Clockwise
16.
A rectangular loop is pushed INTO a uniform magnetic field region (field pointing into the page) with constant velocity. The direction of induced current in the loop is:
A.
Counter-clockwise
B.
No induced current
C.
Clockwise
D.
Depends on loop size
ANSWER :
A. Counter-clockwise
17.
A conducting loop moves with constant velocity through a region of uniform magnetic field. The induced emf in the loop is:
A.
Constant throughout
B.
Maximum when leaving field
C.
Zero when fully inside the field region
D.
Maximum when entering field
ANSWER :
C. Zero when fully inside the field region
18.
A conducting loop moves with constant velocity INTO a region of uniform magnetic field. The direction of the force on the loop due to induced current is:
A.
Opposite to velocity
B.
Zero
C.
Same as velocity
D.
Perpendicular to velocity
ANSWER :
A. Opposite to velocity