1 |
A current carrying conductor experience maximum magnetic force in a uniform magnetic field when it is placed. |
Perpendicular to field
Parallel to field
At an angle of 60 <sup>o</sup> to the field
None of these
|
2 |
Magnetic lines of force are. |
Imaginary
Real
Perpendicular
In phase with electric lines of force
|
3 |
A charged particle enters in a strong magnetic field its K.E. |
Remain constant
Increases
Decreases
Increases then decreases
|
4 |
The magnetic force is simply a |
Reflecting force
Deflecting force
Restoring force
Gravitational force
|
5 |
The SI Unit of magnetic induction is. |
Weber
Tesla
Gauss
Newton
|
6 |
___ is correct relation. |
IT = 10<sup>-4 </sup>G
IT = 10<sup>4</sup> G
IT = 10<sup>2</sup> G
IT = 10<sup> -2</sup> G
|
7 |
A dot represents the direction of magnetic field. |
Out of page
Into the page
Tangent to page
Parallels to page
|
8 |
Two parallel wires carrying currents in the opposite direction. |
Repel each other
Attract each other
Have no effect upon each other
They cancel out their individual magnetic fields.
|
9 |
Write the SI unit of magnetic flux. |
Tesla
Weber
Weber m-2
Tesla m2
|
10 |
The SI unit of E is NC-1 and that of B is Na-1 m-1 then the unit of E/B is. |
ms-2
ms
ms<sup>-1</sup>
m-1s-1
|
11 |
A Current flowing towards the reader is denoted by. |
Cross
a bracket
A dot
Positive sign
|
12 |
The unit of permiability of free space is: |
T.m/A
T.m<sup>2</sup>/A
T.m/A<sup>2</sup>
None of these
|
13 |
Ampere's law is applicable to: |
Circular path
Rectangular path
To any closed path
Nonwe of these
|
14 |
The force on a charge particle moving parallel to magnetic field is: |
Maximum
Minimum
Zero
None of these
|
15 |
An electron moves at 2 x 102 m/sec perpendicular to magnetic field of 2T what is the magnitude of magnetic force: |
1 x 10<sup>-6</sup> N
6.4 x 10<sup>-17</sup> N
3.6 x 10<sup>-24</sup> N
4 x 10<sup>6</sup> N
|
16 |
One weber is equal to: |
N.A <sup>2</sup>/m
N.m<sup>2</sup>/A
N.A/m
N.m/A
|
17 |
The Weber is unit of measure of: |
Conductance
Electric current
Magnitic flux
Electric flux
|