12th Class Physics MCQS
The conductor experience force, placed in magnetic above:
Remains at rest
Move towards stronger part of field
Move upwards in space
Move towards weaker part of field
The unit of Magnetic flux is called.
None of above
weber
NM-1A-1
weber/m2
The field is strong and uniform.
Inside the solenoid
All of above
Perpendicular to solenoid
Surrounding of solenoid externally
The unit of permiability of free space is:
T.m/A2
T.m2/A
None of these
T.m/A
The Grid ‘G’ in cathode ray oscilloscope.
Is at – Ve potential with respect to cathode.
Control no. of electrons beam
Accelerate as well as focus electron beam
Both d and b
The dimensions of magnetic flux are
ML2T2A-1
MLT-2A-1
M1L-2T1A1
ML2T-2A-1
A moving charge is surrounded by:
2 Fields
4 Fields
None of these
3 Fields
?? (Ampere’s constant) has value.
4?x10-17 Wbm2
4?x107 WbA-1m-1
4?x10-27 Wb/m2
4?x10-7 WbA-1m-1
1 tesla =
1NA-1m
1 MAm-1
1NA-1m-1
None of above
The magnetic field inside solenoid is given:
??I/n
??n/12
??nI
??nI2
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