Which of the following flows only in one direction?
DC
AC
Both 1 and 2
None of these
The SI unit of magnetic field is
Tesla
Nm
NA-1
N / m
At the ends, the current carrying solenoid behaves like
bar magnet with different polarities
compass needle
bar magnet with fixed polarity
current carrying coil
Weber / meter2 is the unit of
Magnetic field
Magnetic flux
Magnetic intensity
Magnetic force
The direction of induced current is obtained by
Fleming's left hand rule
Clock rule
Right hand thumb rule
Fleming's right hand rule
In a step down transformer?
Ns / Np < 1
Ns = Np
Ns / Np > 1
Nothing can be said
In a step up transformer?
Ns < Np
Ns > Np
Which of the following has its working based on electromagnetic induction?
DC motor alone
AC generator alone
Transformer alone
Both AC generator and transformer
Es Is =
Ep Is
Ep Ip
Ep ⁄ Ip
Es Ip
