Electric Circuits
Two wires of A and B of the same material and length ‘l’ and ‘2l’ have radius ‘r’ and ‘2r’ respectively. The ratio of their specific resistance will be

 1:1.
 4:1.
 1:2.
 1:8.

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Electric Circuits
What is referred as the average value in AC opearation?

 Average of all values of the (+)ve and (-)ve half.
 Average of all values of an alternating quantity.
 Average of all values of the phase sequences.
  Average of all values of an alternating quantity over a complete cycle.

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