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Electric Circuits

Electric Circuits
The electrical resistance of human body is around

  250 ohms.
  1000 ohms.
  25 ohms.
  5 ohms.

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Electric Circuits
A 3 – φ delta connected symmetrical load consumes P Watts of power from a balanced supply. If the same load is connected in star to the same supply then what is the power consumption?

 √3P.
 P/3.
 P.
 3P.

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Electric Circuits
Which material has extremely large resistance?

None of these
 Conductor
 Semiconductor
 Insulator

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Electric Circuits
The resistance of 100 W, 200 V lamp is

 400 Ω.
 800 Ω.
 200 Ω.
 1600 Ω.

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Electric Circuits
A 10Ω resistor is stretched to increase its length double. Its resistance will now be

 5 Ω.
 20 Ω.
 40 Ω.
 10 Ω.

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Electric Circuits
In balanced bridge, if the positions of detector and source are interchanged, the bridge will still remain balanced. This can be explained from which theoem

 Thevinin's theorem
 Norton's theorem
 Reciprocity theorem
 Compensation theorem

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