1 |
The fraction change in resistance per Kelvin is known as: |
Temperature coefficient of Resistance
Coefficient of voltage of change
Thermal expansion
All of the above
|
2 |
The color code of "Green" |
8
3
5
7
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3 |
Electric power: |
Vx1
V<sup>2</sup>x1
V/1
V/1<sup>2</sup>
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4 |
The algebraic sum of potential change in a closed circuit is zero. |
Kirchhoff's 1st rule
Kirchhoff 2<sup>nd</sup> rule
Krichoff's 3<sup>rd</sup> rule
Kirchhoff 4<sup>th</sup> rule
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5 |
The Kirchhoff 1st rule is manifestation of: |
Law of conservation of mass
Law of Conservation of charge
Law of conservation of energy
None of above
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6 |
The value of maximum output power is? |
E/4R
E<sup>2</sup>/4R
E/4R<sup>2</sup>
Non of above
|
7 |
Thermistor with high - ve temperature coefficient are very accurate for measuring low temperature especially near is. |
10 kelvin
70 kelvin
200 kelvin
35 kelvin
|
8 |
Tolerance of "Gold" band. |
±10%
±5%
±15%
±20%
|
9 |
The unit of conductivity is: |
Ohm<sup>-3</sup>m<sup>-1</sup>
Ohm m<sup>-1</sup>
Both a and b
Ohm m<sup>-1</sup>
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10 |
The vessel containing the tow electrodes and liquid to known as. |
Chemical cell
Volt cell
Volta cell
Volta meter
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11 |
The heat produced by passage of current. |
H=I<sup>2</sup>Rt
H=IR2T
H=I/Rt
H=I<sup>2</sup>/Rt
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12 |
Heat energy is converted into electrical energy. |
Solar cells
thermocouples
Electric generators
None of above
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13 |
The free electrons experience force. |
In direction of -E
In direction of E
Both A and B
All of the above
|
14 |
The drift velocity is of order: |
10<sup>-13</sup>m/s
10<sup>3</sup> m/s
10<sup>-3</sup>m/s
10<sup>-4</sup>m/s
|
15 |
In gas the charge carriers are: |
Electrons
Ions
Both a & b
None of above
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16 |
Unit (S.I) of temperature coefficient of resistivity of a material is |
K
K<sup>-1</sup>
<sup>o</sup>C
K<sup>-2</sup>
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17 |
Terminal potential difference is greater than emf of the cell when |
Circuit is open
Circuit is closed
small battery is charged by bigger battery
None of these
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