Related Questions

Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its vertex and parallel to the base, is __________ than that passing through its C.G. and parallel to the base.
A Nine times
B Six times
C Four times
D Two times
When a current carrying conductor is brought into magnetic field, the force that moves the conductor depends upon
A The value of current
B The weight of the conductor
C The direction of the conductor
D None of the above
What is the net force experienced by a bar magnet placed in a uniform magnetic field?
A Zero
B Depends upon length of themagnet
C Never zero
D Depends upon temperature
Hall effect is observed in a specimen (metal or semi conductor) when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is
A Normal to both current and magnetic field
B In the same direction as current
C In a direction anti parallel to magnetic field
D None of the above
The length of a rectangular field F is 3 km greater than the side of a square field M , and the width of field F is 3 km less then the side of field M. If the area of field M is m2 square km, what is the area of field F?
A m2 +6
B 6
C m2 - 6
D m2 +9
A farmer has two rectangular fields. The larger field has twice the length and four times the width of the smaller field. If the smaller field has area K, then the area of the largest field is greater than the area of the smaller field by what amount?
A 4K
B 6K
C 7K
D 8K
A farmer has two rectangular fields. The larger field has twice the length and four times the width of the smaller field. If the smaller field has area K, then the area of the larger field is greater than the area of the smaller field by what amount ?
A 2K
B 5 K
C 6K
D 7K
Electron current is flowing through a conductor in a direction you might describe as straight into this page. What is the direction of the resulting magnetic field?
A Clockwise
B Counterclockwise
C Out of this page
D Into this page
E None of the above
Hall effect is observed in a specimen when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is
A Normal to both current and magnetic field
B In the direction of current
C Antiparallel to magnetic field
D In arbitrary direction
A farmer has two rectangular fields. The larger has twice the length and four times the width of the smaller field. If the smaller field has area k, then the area of the larger field is greater than the area of the smaller field by what amount?
A 2k
B 6k
C 7k
D 8k

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