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A wire has a resistance of 2.5 Omega at...

A wire has a resistance of `2.5 Omega ` at `100^@` C. Temperature coefficient of resistance of the material `alpha = 3.6 xx 10^(-3) K^(-1) ` at `25^@` C. Find its resistance at `25^@ C`.

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To find the resistance of the wire at \(25^\circ C\), we can use the formula that relates the resistance of a conductor at two different temperatures: \[ \alpha = \frac{R_T - R_0}{R_0 (T_2 - T_1)} \] Where: - \(R_T\) = Resistance at temperature \(T_1\) (which is \(100^\circ C\)) ...
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AAKASH SERIES-CURRENT ELECTRICITY-PROBLEMS (LEVEL-II)
  1. A wire has a resistance of 2.5 Omega at 100^@ C. Temperature coeffici...

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  2. A battery of emf 10 V and internal resistance 3 Omega is connected to ...

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  3. At room temperature (27.0 .^(@)C) the resistance of a heating element ...

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  4. Determine the current in each branch of the network shown in figure.

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  5. A storage battery of emf 8.0 V and internal resistance 0.5 Omega is be...

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  6. Two wires of equal length, one of aluminium and the other of copper ha...

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  7. (a) Given n resistors each of resistance R, how will you combine them ...

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  8. Determine the equivalent resistance of networks shown in figures above

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  9. Given the resistances 2 Omega , 3 Omega , 4 Omega how will you combine...

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  10. The correct combination of three resistances 1Omega, 2Omega and 3Omega...

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  11. Given the resistances 1 Omega , 2 Omega , 3 Omega how will you combine...

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  12. (6//11) Omega

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  13. Figure 6.13 shows a 2.0 V potentiometer used for the determination of ...

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  14. The earth’s surface has a negative surface charge density of 10^(-9) C...

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  15. Siix lead-acid type of secondary cells, each of emf 2.0 V and internal...

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  16. A secondary cell after long use has an emf of 1.9 V and a large intern...

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  17. Determine the current drawn from a 12V supply with internal resistance...

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  18. Figure 6.36 shows a potentiometer with a cell of emf 2.0 V and interna...

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  19. Figure 6.36 shows a potentiometer with a cell of emf 2.0 V and interna...

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  20. Figure 6.36 shows a potentiometer with a cell of emf 2.0 V and interna...

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  21. Figure 6.36 shows a potentiometer with a cell of emf 2.0 V and interna...

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