Related Questions

K produces 100 parts twice as fast as G does. G produces 100 parts in 40 minutes. If each produces parts at a constant rate, how many parts will K produces in 6 minutes.
A 30
B 25
C 20
D 15
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
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
q পরিমাণ আধান একটি চৌম্বক ক্ষেত্র B→ এর সাথে সমান্তরালে V→ বেগে গতিশীল। উক্ত স্থানে একটি তড়িৎক্ষেত্র E→ থাকলে আধানের উপর ক্রিয়াশীল বল কত হবে? (A charge q moving with velocity V→ along the direction of a magnetic field B→ . If there is an electric field E→ in the same place then what will be the effective force on the charge q?)
A q(B→+V→×E→)
B q(B→+V→.E→)
C qE→
D q(E→+B→)
q পরিমাণ আধান একটি চৌম্বক ক্ষেত্র i এর সাথে সমান্তরালে বেগে গতিশীল। উক্ত স্থানে একটি তড়িৎক্ষেত্র থাকলে আধানের উপর ক্রিয়াশীল বল কত হবে? ( A charge moving with velocity along the direction of a magnetic field B. If there is an electric field E in the same place then what will be the effective force on the charge q?)
A qE→+v→×B→
B qE→+v→·B→
C qE→
D qE→+B→
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
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
How does the magnetic compass needle behave in a magnetic field?
A It assures a position right angle to magnetic field
B It starts rotating
C It assures a position which follows a line of magnetic flux
D None of the above
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

Next steps