| 1 |
The unit of permiability of free space is: |
- A. T.m/A
- B. T.m<sup>2</sup>/A
- C. T.m/A<sup>2</sup>
- D. None of these
|
| 2 |
The name of the scientist who noted that a compass needle was deflected when placed near the current carrying conductor |
- A. Henry
- B. Faraday
- C. Coloumb
- D. Oersted
|
| 3 |
The SI unit of magnetic induction 'B' Tesla is equal to. |
- A. NA-1m-1
- B. Nam-1
- C. NA-1 m
- D. Na2m-1
|
| 4 |
In current carrying long solenoid the magnetic field produced does note depend upon |
- A. The radius of solenoid
- B. Number of turns per unit length
- C. Current flowing through solenoid
- D. All of above
|
| 5 |
When charge particle enter perpendicular to magnetic field, the path followed by it is: |
- A. A helix
- B. A circle
- C. Straight line
- D. Ellipes
|
| 6 |
A charged particle enters in a strong magnetic field its K.E. |
- A. Remain constant
- B. Increases
- C. Decreases
- D. Increases then decreases
|
| 7 |
If the number of turns become double but length remain same, then magnetic field in the solenoid become. |
- A. Half
- B. Double
- C. Remain same
- D. Zero
|
| 8 |
The magnetic flux will be max, For an angle of: |
- A. 0<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°</span>
- B. 60<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°</span>
- C. 90<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°</span>
- D. 180<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°</span>
|
| 9 |
For accurate measurement of current through a circuit, the resistance of ammeter should be |
- A. Very small
- B. Very high
- C. Neither small nor high
- D. None of the above
|
| 10 |
The acceleration of an electron of mass m and charge e, moving with uniform speed v at right angles to a magnetic field of flux density B, is given by |
|