Question

Four situations are given below-
(i) An infinitely long wire carrying current.
(ii) A rectangular loop carrying current.
(iii) A solenoid of finite length carrying current.
(iv) A circular loop carrying current.
In which of the above cases will the magnetic field produced be like that of a bar magnet?
(a) Only(i) (b) (I) and (iii) (c) Only(iii) (d) Only (iv)

Answer 1

Answer:

(iii) A solenoid of finite length carrying current.

i hope it's help to you

Answer 2

Answer:

iii)only c

Only a solenoid produces a magnetic effect like that of a bar magnet