What is electromagnet ?

-
Answer:-
A magnet excited by the electric current flowing through the wires wound over soft iron pieces is called an electromagnet.

Comments

Post a Comment

Popular posts from this blog

angle of contact.

-
It is defined as the angle between the tangent to the liquid surface at the point of contact and solid surface inside the liquid is called as angle of contact  The value of angle of contact depends upon  (i) Nature of solid and liquid in contact  (ii) Cleanliness of the surface in contact  (iii) Medium above the free surface of liquid 
Read more

Difference between molecularity & order of reaction

-
Answer:-                                      order of Molecularity                                reaction       Common points:- • It's value does not         •Its value also  exceed three.                      does not exceed                                              three. • Depends upon the          •It also depends  Condition of a react           upon the conidti ion.                                       on of a reaction.  Dif...
Read more

composition table in group theory.

-
If S be a finite set consisting of n elements (say) then a composition(usually binary composition) * in S can be described by means of a table consisting of n rows & n columns in which the entry at the intersection of new headed by an element a € S is a*b . such tables are called composition tables. In order to verify group properties of a finite set under some binary operation, conveniently one can do this by the help of composition table.
Read more