In a step down transformer, no. of turns in primary coil are:
less than that of secondary
greater than that of secondary
equal to that of secondary
a constant
A solenoid is a
loop of wire, having large no. of turns
wire with insulation
conducting cylinder
capacitor
The armature of a electric door bell is made up of
Soft iron bar
Steel
Copper
Nickel
Maxwell's right hand thumb rule is used for,
finding the direction of current
finding the direction of magnetic field
finding the strength of magnetic field
finding the amount of current
Which of the following exist around a moving electron?
Only electric field
Only magnetic field
Both magnetic and electric field
Either a magnetic or electric field at a time
The space where the magnetic power felt is its magnetic
poles
field
axis
strength
Magnetic force act when the magnetic materials
at a distance
with contact
both at a distance and contact
without contact
What is the naturally occuring magnets?
Soft Iron
Magnetite
Manganese
Boaxite
Which of the following is a non-magnetic material?
Cobalt
Iron
Brass
In which direction the magnetic compass pointer always gets attracted?
North
North - East
South
South - West