| 1 |
When the charged particle is projected at right angles to the field, then experienced by it will be: |
Maximum
Zero
qvB
Both (A) and (B)
Both (A) and (C)
|
| 2 |
A long wire wound tightly on a cylindrical core is called: |
Potentiometer
Solenoid
Toroid
Wheat and stone bridge
None of these
|
| 3 |
Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis: |
Maximum
Minimum
Zero
Very small
None of these
|
| 4 |
Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:
|
BA<span style="font-family: "Times New Roman", serif; font-size: 12pt; text-align: justify;">CosѲ</span><p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt;
line-height:107%;font-family:"Times New Roman","serif""><o:p></o:p></span></p>
Zero
BA
BA sin<span style="font-size:12.0pt;line-height:107%;
font-family:"Times New Roman","serif";mso-fareast-font-family:Calibri;
mso-fareast-theme-font:minor-latin;mso-ansi-language:EN-US;mso-fareast-language:
EN-US;mso-bidi-language:AR-SA">Ѳ</span>
None of these
|
| 5 |
At a given instant, a photon moves in +x direction in a region where there magnetic field in -z direction. The magnetic force on the proton will be the: |
-y direction
+y direction
+z direction
-z direction
None of these
|
| 6 |
NmA-1 is commonly called: |
Weber
Apmere
Guass
Coulomb
None of these
|
| 7 |
Strength of magnetic field is measured in SI units, in: |
N
N/Am
Am/N
Nm/A
None of these
|
| 8 |
The permeability of free space is measured in: |
Wb/Am
Wb A/m
Am/Wb
m/Web A
None of these
|
| 9 |
If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field: |
Becomes Half
Becomes double
Is not affected
Becomes one fourth
None of these
|
| 10 |
The magnetic field inside a solenoid can be increased by: |
Increasing n
Decreasing I
Increasing I
By using iron core within solenoid
All correct except (B)
|
| 11 |
Total number of turns on 0.15 m length solenoid is 300. the value of n is: |
Greater than 300
Smaller than 300
Equal to 300
Any of (A) or (B)
Any of (A) or(C)
|
| 12 |
Hold the solenoid in the right hand with fingers
curling in the direction of current. The direction of the field will be given
by: |
<p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Thumb<b><o:p></o:p></b></span></p>
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt;
line-height:107%;font-family:"Times New Roman","serif"">Curled fingers<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt;
line-height:107%;font-family:"Times New Roman","serif"">Middle finger<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt;
line-height:107%;font-family:"Times New Roman","serif"">Arm of right hand<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt;
line-height:107%;font-family:"Times New Roman","serif"">None of these<o:p></o:p></span></p>
|
| 13 |
In the formula B= µ̻ nl, the symbol n denotes: |
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt;
line-height:107%;font-family:"Times New Roman","serif"">Total number of turns
of solenoid<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Number
of turns per unit length<b><o:p></o:p></b></span></p>
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt;
line-height:107%;font-family:"Times New Roman","serif"">Number of turns per
unit volume<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt;
line-height:107%;font-family:"Times New Roman","serif"">Numbers of turns per
unit area<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt;
line-height:107%;font-family:"Times New Roman","serif"">Number of moles<o:p></o:p></span></p>
|
| 14 |
A field is uniform and much stronger: |
<p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Inside
a long solenoid<b><o:p></o:p></b></span></p>
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt;
line-height:107%;font-family:"Times New Roman","serif"">Outside a long solenoid<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt;
line-height:107%;font-family:"Times New Roman","serif"">At the end of a long
solenoid<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt;
line-height:107%;font-family:"Times New Roman","serif"">At the central point of
long solenoid<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt;
line-height:107%;font-family:"Times New Roman","serif"">None of these<o:p></o:p></span></p>
|
| 15 |
A solenoid is a coil of wire which is: |
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt;
line-height:107%;font-family:"Times New Roman","serif"">Short, loosely wound, cylindrical<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt;
line-height:107%;font-family:"Times New Roman","serif"">Long, tightly wound,
spherical<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt;
line-height:107%;font-family:"Times New Roman","serif"">Long, loosely wound,
cylindrical<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Long,
tightly wound, cylindrical<b><o:p></o:p></b></span></p>
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt;
line-height:107%;font-family:"Times New Roman","serif"">None of these<o:p></o:p></span></p>
|
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