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A platinum wire has a resistance of 10Om...

A platinum wire has a resistance of `10Omega` at `C30^(@)` and 30`Omega` in a hot furnace. Find the temperature of the hot furnace. Given `prop=36xx10^(-4)c(-1)`

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`645.5^(@)C`
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NEW JOYTHI PUBLICATION-CURRENT ELECTRICITY-PRACTICE PROBLEMS FOR SELF ASSESSMENT
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  2. A 100gm piece of aluminium is drawn into a wire of 0.2 mm thick and an...

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  3. A platinum wire has a resistance of 10Omega at C30^(@) and 30Omega in ...

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  7. Find the equivalent resistance of the given network between A & E.

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  8. Three resistors each of resistance 4Omega, 8Omega and 1Omega are conne...

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  9. Two resistors of resistances 5Omega and 1Omega are put in parallel. A ...

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  10. Calculate the equivalent resistance between X and Y of the following n...

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  11. Find the effective resistance between P & Q of the following network.

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  12. You are given two resistors. By using-singly, in series or in parallel...

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  13. A cell of e.m.f. 2V and internal resistance 0.2Omega supplies a curren...

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  14. A potentiometer wire of 8m long and 24Omega, resistance is connected i...

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  15. A battery of emf 9 Vand negligible internal resistance is connected to...

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  16. Calculate the effective resistance between P & Q of the following netw...

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  17. In the circuit given below find the current I and p.d. across 30Omega ...

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  18. Calculate the current delivered by the voltage source in the following...

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  19. Determine the value of R.

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  20. Determine the value of R, in the following network, if no current flow...

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