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PUNJAB BOARD PREVIOUS YEAR PAPERS-Electric Current, Resistance and E.M.F. -Exercise
- 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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- What is the internal resistance of a cell ? Derive an expression for i...
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- Why connecting wires are made up of copper ?
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- What is the internal resistance of a cell ? Derive an expression for i...
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- What is e.m.f. of a cell ? On what factors does its value depend ?
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- Establish the relation between drift velocity of electrons and electri...
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- What do you mean by conductivity of a material? Give its SI unit.
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- What is effect of rise in temperature on the resistivity of metallic c...
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- What is meant by resistivity ? Write its S.I. unit.
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- What is the effect of rise in temperature on the conductivity of coppe...
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- What is meant by resistance of conductor and define its units.
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- What is effect of rise in temperature on the conductivity of metallic ...
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- Distinguish between emf and potential difference.
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- What is the internal resistance of a cell ? Derive an expression for i...
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- What is a drift velocity ? Establish the relations between the drift v...
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- State Ohm’s law. Derive the laws of resistance, when they are connecte...
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