Basic Maths and Units and DimensionsHard
Question
The matrials sutiable for making electromagnets should have
Options
A.high retentivity and low coercivity
B.low retentinity and low coercivity
C.high retentivity and high coercivity
D.low retentinity and high coercivity
Solution
Elctro magnet should be amenable to magnetsation and demagnation
∴ retentivity should be low and coercivity should be low.
∴ retentivity should be low and coercivity should be low.
Create a free account to view solution
View Solution FreeTopic: Basic Maths and Units and Dimensions·Practice all Basic Maths and Units and Dimensions questions
More Basic Maths and Units and Dimensions Questions
Two identical glass rods S1 and S2 (refractive index = 1.5) have one convex end of radius of curvature 10 cm. They are p...A wind with speed 40 m/s blows parallel to the roof of a house. The area of the roof is 250 m2. Assuming that the pressu...Displacement x of a particle is given by x = At2 + Akt3, where t is time. Units of k can be...If is along north and is along west, Then the direction of is :-...Two skaters A and B of mass 50 kg and 70 kg, respectively, stand facing each other, 6 metres apart on a horizontal smoot...