The correct option is D) A device for stepping up or down the voltage of 
. supply
A transformer is a device that is used to either raise or lower voltages and currents in an electrical circuit. In modern electrical distribution systems, transformers are used to boost voltage levels so as to decrease line losses during transmission
A transformer is
A) A device for stepping up D.C.
B )A generator of current
C) Device for converting direct current into alternating current
D) A device for stepping up or down the voltage of. supply
A) A device for stepping up D.C.
B )A generator of current
C) Device for converting direct current into alternating current
D) A device for stepping up or down the voltage of
. supplyA transformer is
A) A device for stepping up D.C.
B )A generator of current
C) Device for converting direct current into alternating current
D) A device for stepping up or down the voltage of. supply
A) A device for stepping up D.C.
B )A generator of current
C) Device for converting direct current into alternating current
D) A device for stepping up or down the voltage of
. supply
.
)
west of the geographic north. The north tip of the magnetic needle of a dip circle placed in the plane of magnetic meridian points above the horizontal. The horizontal component of the earth’s field is measured to be 
Specify the direction and magnitude of the earth’s field at the location.At a certain location in Africa, a compass points 
and 
carrying currents of 
and 
in the same direction are separated by a distance of 
. Estimate the force on a 
section of wire A.
wire carrying a current of 
is placed inside a solenoid perpendicular to its axis. The magnetic field inside the solenoid is given to be 
. What is the magnetic force on the wire?
and making an angle of 
with the direction of a uniform magnetic field of 
. What is the magnitude of the field 
at a point 
from the wire?
-turns carrying current 
.
is at distance 
from the wire. Find the force acting on the electron if its velocity is directed towards the wire.