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15 Cards in this Set
- Front
- Back
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Electric Current |
Rate of flow of charge is known as electric current. |
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Drift Velocity |
It is defined as the velocity with which the free electrons get drifted towards the +ve terminal under the effect of the applied electric field. |
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Relaxation Time |
The average time elapsing b/w two successive collision of electrons inside a conductor , under the application of external electric field. |
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Mobility (μ) |
It is defined as the magnitude of drift velocity of charge per unit electric field applied. |
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Ohm's Law |
At constant temp, potential difference at the ends of a conductor is directly proportional to current. |
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Colour Coding |
BBROY of Great Britain had a very Good Wife. |
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EMF |
It is the amount of workdone by the cell on unit charge to move it around one complete cycle. |
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Internal Resistance |
Resistance b/w two electrodes Depends on : 1. Distance b/w two electrodes 2. Area of electrodes 3. Conc. Of electrolyte 4. Temp. Of electrolyte |
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Terminal potential difference |
It is the amount of workdone for carrying a unit positive charge from one terminal to the other terminal. |
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Relation b/w E,V,r |
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Kirchhoff's First Law |
This law states that the algebraic sum of the current meeting at a point in an electrical circuit is always 0. |
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Kirchhoff's Second Law |
This law states that the algebraic sum of potential difference across all the elements in a loop is 0. |
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Wheat Stone Bridge |
It is an arrangement of four resistance used to measure one of them in terms of other three. |
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Meter Bridge |
A meter bridge is also known as slide wire bridge. It is practical for of wheat stone bridge. |
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Potentiometer |
It is an apparatus used to compare EMFs of two cells or to measure internal resistance. |
