1 |
The heat produced by passage of current. |
- A. H=I<sup>2</sup>Rt
- B. H=IR2T
- C. H=I/Rt
- D. H=I<sup>2</sup>/Rt
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2 |
Potentiometer is used to. |
- A. Compare emf of two cells
- B. Detect internal resistance of cell
- C. Measure P.D.
- D. All of these
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3 |
In gas the charge carriers are: |
- A. Electrons
- B. Ions
- C. Both a & b
- D. None of above
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4 |
The drift velocity is of order: |
- A. 10<sup>-13</sup>m/s
- B. 10<sup>3</sup> m/s
- C. 10<sup>-3</sup>m/s
- D. 10<sup>-4</sup>m/s
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5 |
The free electrons experience force. |
- A. In direction of -E
- B. In direction of E
- C. Both A and B
- D. All of the above
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6 |
Two resistance of 2 Ohm each are connected in parallel combination equivalent resistance will be. |
- A. 4 Ohm
- B. 2 Ohm
- C. 1 Ohm
- D. 8 Ohm
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7 |
A substance having the negative temperature co efficient of resistivity out of the following is. |
- A. Carbon
- B. Iron
- C. Tungsten
- D. Gold
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8 |
The head produced by the passage of current through a resistor is. |
- A. H= I<sup>2</sup>Rt
- B. H = IR<sup>2</sup>t
- C. H = 1/Rt
- D. H = I<sup>2</sup>/Rt
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9 |
The reciprocal of resistance is called. |
- A. Capacitance
- B. Resistance
- C. Conductance
- D. Inductance
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10 |
the current which flows from a point at higher. potential to point at lower potential is called. |
- A. Electric current
- B. Conventional current
- C. Either of these
- D. None of above
|