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Electric Circuits

Electric Circuits
In which of the circuits power factor can be zero?

 capacitive.
 resistive.
 inductive.
 both ‘a’ and ‘b’

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Electric Circuits
If a large resistance is connected in parallel to a small resistance then net resistance will be

 greater than the large resistance.
None of these
 smaller than the small resistance.
 smaller than the greater but larger than the smaller resistance.

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Electric Circuits
Current locus is obtained by which of the following?

 Varying any one of the circuit element
 Varying source frequency
None of these
 Either of these

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Electric Circuits
The ratio of the resistance of a 200 W, 230 V lamp to that of a 100 W, 115 V lamp will be

  2.
  0.5.
 0.25.
 4.

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Electric Circuits
The greater the internal resistance of a cell

 the greater the emf.
 the greater the terminal voltage.
 the lesser the terminal voltage.
 the lesser the emf.

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Electric Circuits
A capacitor having a mica dielectric εR = 6, a plate area of a 10 inches2 and a separation 0.01 inch. Find the value of C

 0 F.
 1.349 F.
 1.349 nF.
 1.349 μF.

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