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Electric Circuits

Electric Circuits
For same voltage, the ratio resistance of 100 W lamp to resistance of 25 W lamp is

 1/4.
 1.
 4.
 16.

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Electric Circuits
Number of branches of a graph should be --------- number of branches of a network

 equals to
 less than equals to
 less than
 greater than

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Electric Circuits
Voltage magnification will occur in which of the following case?

 Parallel resonance
None of these
 Both
 Series resonance

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Electric Circuits
Find the total power absorbed by the resistor in the given circuit.

  6 W.
 30 W.
 12 W.
 24 W.

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Electric Circuits
For the circuit shown below the value of R is adjusted so as to make the current in RL equal to zero. Calculate the value of R.

 2 Ω.
 4 Ω.
 3 Ω.
 1 Ω.

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Electric Circuits
When water is added to sulphuric acid

  colour of acid changes.
  lot of heat is generated.
  acid particles get separated.
  water start boiling.

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