Question

Q3
Four situations are given below
(1) an infinitely long wire carrying current
(it) a rectangular 166p Carrying, c rane
(it) a solenoid of finite length Carrying
current
(iv) a circular 166p Carrying current
in which of the following cases will the
magnetic field produced be like that of var
magnet
( ) (1) and (
Only (D)
Only (1)​

Answer 1

Answer:

iii)only c

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