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The resistance of a thin metallic cylind...

The resistance of a thin metallic cylinder changes from `4.25 Omega "to" 4.75 Omega` when its temperture is incrased from `10^@C "to 110^@C`. Calculate the resistance of the same object when it is kept at temperature `0^@C` . Also calculate the temperature coefficient of resistance.

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To solve the problem step by step, we will use the formula for resistance as a function of temperature: \[ R = R_0 (1 + \alpha T) \] where: - \( R \) is the resistance at temperature \( T \), - \( R_0 \) is the resistance at 0°C, - \( \alpha \) is the temperature coefficient of resistance, ...
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MODERN PUBLICATION-CURRENT ELECTRICITY-Chapter Practice Test
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  3. State the direction of drift velocity of electron with respect to the ...

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  4. Why is manganin preferred over conductors like copper to construct sta...

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  5. Is the graph showing variation of current versus voltage for a diode l...

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  6. On increasing the temperature of a copper conductor, its resistivity i...

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  7. Prove that the current density of a metallic conductor is directly pro...

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  8. Deduce Ohm's law using the concepts of drift velocity and relaxation t...

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  9. Define mobility of a charge carrier.What is its relation with relaxati...

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  10. Write the sequence of colours in a carbon resistor having resistances ...

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  11. A cell of emf E and internal resistance r is connected across an exter...

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  12. State the principle of potentiometer. Draw a circuit diagram used to c...

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  13. With the help of a circuit diagram, explain the working principle of a...

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  14. Obtain the condition for bridge balance in Wheatstone's bridge.

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  15. Answer the following : (a) Why are the connections between the resi...

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  16. n-identical cells each of emf E and internal resistance r are connecte...

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