Which of the following flows only in one direction?
DC
AC
Both 1 and 2
None of these
The magnetic field lines inside a current carrying solenoid are:
along the axis and parallel to each other.
perpendicular to the axis and equidistant from each other.
circular but they do not intersect each other.
circular at the ends inside the solenoid.
Which of the following looks like a helical spring ?
Compass needle
Solenoid
Strong magnet
Current carrying conductor
Which of the following is incorrect?
In a step down transformer?
Ns / Np < 1
Ns = Np
Ns / Np > 1
Nothing can be said
Weber / meter2 is the unit of
Magnetic field
Magnetic flux
Magnetic intensity
Magnetic force
Direction of magnetic field can be find by
Flemings left hand rule
Len's law
Right hand thumb rule
Farady's law
The direction of induced current is obtained by
Fleming's left hand rule
Clock rule
Fleming's right hand rule
Direction of induced emf can be obtained from
Lenz's law
Flemings right hand rule
Symbol used to represent magnetic field.
Φ
B
H
