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Electric Circuits

Electric Circuits
Which of the following are the passive elements?

 Resistor
 None of these.
 Both
 Bulb

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Electric Circuits
Aluminium is produced from bauxite by

  froth flotation.
  rotating.
  electrolytic process.
  oxidation.

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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 ?

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

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Electric Circuits
The plates of lead acid storage battery are most likely to be short circuited if

 too much water is added.
 the electrolyte evaporates.
 sediment collect at the bottom of the battery.
 the battery charged too slowly.

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Electric Circuits
When resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of heater will

  none of these.
  decrease.
  remain constant.
  increase.

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Electric Circuits
Kirchhoffs laws are valid for

  linear circuit only.
  non-linear circuits only.
  passive time invariant circuits.
  both linear and non-linear circuits.

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MORE MCQ ON Electric Circuits

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