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Electric Circuits

Electric Circuits
A wire of resistance R has it length and cross - section both doubled. Its resistance will become

 2R.
 4R.
 0.5R.
 R.

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Electric Circuits
In delta connected circuit when one resistor is open, then power will be

 0.
 increased by factor of 3.
 reduced by the factor of 3.
  remain unchanged.

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Electric Circuits
What will be the resistance if 10 resistors of 10 ohm each are connected in series?

 100 Ω.
 0.1 Ω.
 1 Ω.
 10 Ω.

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Electric Circuits
There are two capacitors C1 and C2 in parallel , what will be their equivalent capacitance?

 (C1C2) / C1 + C2.
 C1C2.
 (C1 + C2) / C1C2.
 C1 + C2.

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Electric Circuits
The resistivity of semi-conductors at room temperatures is

 1.6 × 106 to 100 × 106 ohm - cm.
 0.01 to 50 ohm - cm.
 109 to 1012 ohm - cm.
 1000 to 1500 ohm - cm.

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Electric Circuits
Say A point has an absolute potential of 40 V and point B has an absolute potential of - 10 V, then what will be the value of VBA ?

  - 50 V.
  none of above.
  30 V.
 50 V.

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MORE MCQ ON Electric Circuits

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