Q. 1 In the corkscrew rule, advancement of the screw is indicated by____.
A. direction of magnetic field
B. direction of current
C. direction of force
D. direction of induced emf
Ans.: B
Q. 2 _____ is a measure of the force that can be exerted by a magnet on the other magnet.
A. magnetism
B. pole of magnet
C. pole strength of magnet
D. any of the above
Ans.: C
Q. 3 pole strength is measured in____.
A. weber
B. unit pole
C. tesla
D. Both A and B
Ans.: D
Q. 4 The ____ is defined as the region around or near a magnet within which the effect or influence of the magnet is felt.
A. pole of the magnet
B. magnetism
C. magnetic field
D. electric field
Ans.: C
Q. 5 the magnetic field of a magnet is represented by___.
A. magnetic field line
B. magnetic lines of force
C. magnetic field strength
D. Both A and B
Ans.: D
Q. 6 The magnetic field lines are____ and _____ existence.
A. imaginary, no not has any physical
B. imaginary, they have physical existence
C. real, they have physical existence
D. only imaginary
Ans.: A
Q. 7 ____is defined as the total number of lines of forces in a magnetic field.
A. magnetic field
B. pole strength
C. magnetic line of force
D. magnetic flux
Ans.: D
Q.8 Magnetic flux is measured in____.
A. Weber
B. tesla
C. Newton
D. none of the above
Ans.: A
Q. 9 One weber is equal to
A. 109lines of force
B. 1012 lines of force
C. 108 lines of force
D. 10-19 lines of force
Ans.: C
Q.10 Magnetic flux density is defined as____.
A. Unit area per flux
B. flux per unit area
C. number of magnetic field lines crossing unit area
D. none of the above
Ans.: B
Q.11 Magnetic flux density is measured in__.
A. Weber
B. Tesla
C. A/m
D. N/Wb
Ans.: B
Q. 12 The _____at a point in the magnetic field is defined as the force experienced by a unit North pole placed at that point in the magnetic field.
A. Magnetic field
B. magnetic flux
C. magnetic field strength
D. Magneto motive force
Ans.: C
Q. 13 The magnetic field strength is measured in___.
A. Newton per Weber (N/Wb)
B. ampere per meter (A/m)
C. ampere turns per meter (AT/m)
D. all of the above
Ans.: D
Q.14 Magnetic field strength is also called as____.
A. magneto motive force
B. Electric field intensity
C. magnetic field intensity
D. none of the above
Ans.: C
Q. 15 In an electromagnet, the direction of magnetic field is depends on the_______ though the coil.
A. direction of current
B. magnitude of current
C. point at which magnetic field is found out
D. all of the above
Ans.: A
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