Electromagnetism Physics Test 01
Total Questions: 21
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A ) unlike pose repel
B ) like poles attract
C ) magnetic poles do not effect each other
D ) a single magnetic poles does not exsit ✅
A ) form north pole to south pole
B ) from south pole to north pole ✅
C ) form side to side
D ) there are no magnetic field lines
A ) small mass
B ) stationary positive charge
C ) stationary negative charge
D ) magnetic compass ✅
A ) increases ✅
B ) decreases
C ) remains the same
D ) will be zero
A ) mechanical energy into electrical energy
B ) mechanical energy into chemical energy
C ) electrical energy into mechanical energy ✅
D ) electrical energy into chemical energy
A ) the armature
B ) the commutator ✅
C ) the brushes
D ) the slip rings
A ) mass
B ) charge
C ) momentum
D ) energy ✅
A ) increases the input current
B ) increases the input voltage ✅
C ) has more turns in the primary
D ) has less turns in the secondary coil
A ) 1s = 10/ p
B ) Ns = N p / 10
C ) N s = 10N p ✅
D ) Vs = V p /10
A ) 0 V ✅
B ) 30 V
C ) 45 V
D ) 60 V
A ) Enhance the flux ✅
B ) decrease the flux
C ) keep flux the same
D ) both a and b
A ) Self induction
B ) Mutual induction ✅
C ) Electrostatic
D ) Induction
A ) Ns/ vp = Vs/ Ns
B ) Ns/Np = Vp/ Vs
C ) Vs/ Vp = Ns/Np ✅
D ) Vp/Np = Ns/Np
A ) Shape of coil
B ) Size of coil
C ) Magnet
D ) Strength of field ✅
A ) Anti-clock wise ✅
B ) Clock wise
C ) Left to right
D ) Along the conductor
A ) Circular
B ) Straight ✅
C ) Solenoid
D ) None of these
A ) North pole ✅
B ) South pole
C ) North and south pole
D ) None
A ) North pole
B ) South pole ✅
C ) North and south pole
D ) None
A ) Iron wire
B ) U-shape magnet
C ) Bar magnet ✅
D ) Point charge
A ) Electric field
B ) Magnetic field ✅
C ) Gravitational field
D ) None
A ) Thumb
B ) Forefinger ✅
C ) Middle finger
D ) Right hand rule