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15 Cards in this Set
- Front
- Back
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What is the e.m.f of a cell? |
The maximum energy the cell can give to a coulomb of charge. |
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What is the internal resistance of a cell? |
The resistance of a cell. |
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What is the terminal potential difference in a circuit? |
The potential difference across the cell when the cell is producing current. |
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What is meant by “lost volts” in a circuit? |
The potential difference across the internal resistance (emf - tpd) |
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Relationship between lost volts, e.m.f and tpd |
E = V + lost v |
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Front (Term) |
Valence Band |
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Front (Term) |
Depletion layer |
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Front (Term) |
n-type semiconductor |
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Front (Term) |
Conduction band |
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Front (Term) |
p-type semiconductor |
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When a n-type semiconductor is doped. What is important about the doping atoms produced? |
The doping atoms produced have one more electron in its outer orbit than the atoms in the semiconductor. |
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When a p-type semiconductor is doped. What is important about the doping atoms produced? |
The doping atoms produced have one less electron in its outer orbit than the atoms in the semiconductor. |
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How does doping increase the conductivity of an intrinsic semiconductor? |
n-type - increases the number of electrons in the conduction band. p-type - increases the number of holes in the valence band. |
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What is meant by Time Dilation? |
The measurement of a time interval of an event on a moving object by a stationary observer. |
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What is Red Shift? |
When light from a object is moving away from us shifts to a larger wavelength. |
