Related Questions

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 rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be
A M
B $$\frac{{\text{M}}}{2}$$
C 2 M
D $$\frac{{\text{M}}}{4}$$
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
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
While comparing magnetic and electric circuits, the flux of magnetic circuit is compared with which parameter of electrical circuit?
A E.M.F.
B Current
C Current density
D Conductivity
A moving-coil permanent-magnet instrument can be used as flux meter
A by using a low resistance shunt
B by using a high series resistance
C by eliminating the control springs
D by making control springs of large moment of inertia
The working of a meter is based on the use of a permanent magnet. In order to protect the meter functioning from stray magnetic fields
A meter is surrounded by strong magnetic fields
B a soft iron shielding is used
C a plastic shielding is provided
D a shielding of anon-magnetic material is used
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
A farmer has two rectangular 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 7K
C 8K
D 12K

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