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Electric Circuits

Electric Circuits
Which of the following may be the value of resistivity of copper at absolute zero in ohm-metre?

 6.24.
 1.56.
 0.020.
 3.12.

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Electric Circuits
Among the options which metal has the highest electrical conductivity?

 Aluminium.
 Steel.
 Copper.
 Stranded aluminium.

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Electric Circuits
To apply reciprocity theorem response to excitation ratio is

 Mho.
 Ohm.
 Either Ohm or Mho.
 No units.

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Electric Circuits
A rectangular magnet of magnetic moment M is cut into two pieces of same length. The magnetic moment of each piece will be

 M.
 M / 2.
 M / L.
 2 M.

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Electric Circuits
Super position theorem is not applicable for

 power calculations.
None of these
 voltage calculations.
 current calculations.

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Electric Circuits
A wire of 0.14 mm diameter and specific resistance 9.6 Ω - cm is 440 cm long. The resistance of the wire will be

 11.3 Ω.
 27.4 Ω.
 9.6 Ω.
 13.7 Ω.

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