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PUNJAB BOARD PREVIOUS YEAR PAPERS-Electric Current, Resistance and E.M.F. -Exercise
- The number density of free electrons in a metal piece is a very large ...
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- Standard resistance coils are made up of which material why ?
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- What is the effect of the temperature on resistivity of metals
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- What is the effect of the temperature on resistivity of semiconductors...
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- Why connecting wires are made up of copper ?
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- What is resistance of a wire ? What are the factors on which resistanc...
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- What is the difference between emf of a cell and potential difference ...
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- What is resistivity of a wire ? What are the physical conditions on wh...
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- What are the factors on which the resistance of the conductor depends ...
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- Distinguish between emf and potential difference.
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- Explain colour code for carbon resistor .
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- Establish the relation between drift velocity of electrons and electri...
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- A large number of free electrons are present in metals.Why is there no...
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- What is a drift velocity ? Establish the relations between the drift v...
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- Why connecting wires are made up of copper ?
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- What are ohmic and non-ohmic devices ? Give one example of each.
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- What is the resistance of a conductor? State the factors on which resi...
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- Which out of the following is used to make standard resistance
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- Why connecting wires are made up of copper ?
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- Standard resistance coils are made up of which material why ?
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