The coefficient of linear equation of co...

The coefficient of linear equation of copper is `17times10^-6//^@C` and its temperature coefficient of resistance is `42.5times 10^(-4^@)C^-1` . IF the resistivity of copper at `0^@C` be `1.55 times 10^-6 Omega`cm. then what will be its resistivity at `100^@C`?

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The correct Answer is:

`2.21 times 10^-6 Omega cm.`

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CHHAYA PUBLICATION-CURRENT ELECTRICITY -EXERCISE ( PROBLEM SET-II)

A wire of 15 Omega resistance is gradually stretched to double its len...
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According to the definition of International ohm, the resistance of a ...
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The coefficient of linear equation of copper is 17times10^-6//^@C and ...
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Two wires are of lengths 1 cm and 2 cm and their diameters are 1 mm an...
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With a series combination of 1 Omega and 2 Omega resistances another s...
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A quadrilateral ABCD is made of conducting wires AB=3 Omega,BC=2 Omega...
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5A current is divided into three parallel branches in a circuit.The ra...
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An electric cell of emf 10 V and of internal resistance 1 Omega is con...
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Three resistances 8 Omega,20 Omega and 40 Omega are connected in paral...
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An electric cell is sending electric currents through a resistance of ...
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A parallel combination of three resistances of 6 Omega, 12 Omega and 1...
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Three resistances of 4 Omega , 5Omega and 12 Omega are connected in p...
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The resistances of a galvanometer is 200 Omega and full-scale deflecti...
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Current is sent through a galvanometer of resistance 50 Omega from a b...
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A shunt is connected with a galvanometer in such a way that 1/90 part ...
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A resistor of magnitude 45 Omega is connected to an electric cell of e...
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Two resistor of magnitudes 300 Omega and 400 Omega are connected with ...
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A number of cells of negligible resistance are connected with battery ...
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A cell AB of resistance 500 Omega is connected to a battery of emf 12 ...
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A certain circuit with resistance R-100 Omega is powered by a direct c...
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