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Electric Circuits

Electric Circuits
The internal resistance of a dry cell is of the order of

  2 to 5 Ohm.
  1 to 15 Ohm.
  0.2 to 0.4 Ohm.
  1 to 1.5 Ohm.

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Electric Circuits
Which of the following is not a bilateral element?

 Resistor.
 Diode.
 Inductor.
 Capacitor.

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Electric Circuits
Two resistor are said to be connected in parallel when

 both ‘b’ and ‘c’
 both carry the same value of current.
 total current equals the sum of branch currents.
 both have the same potential difference.

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Electric Circuits
A capacitor of 50 microfarad is connected in series with a resistance of 120 Ω. If above circuit is connected across 240 V, 50 Hz 1 - φ supply. Find the capacitive reactance?

 63.7 Ω.
 1.765 Ω.
 135.86 Ω.
 0.015 Ω.

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Electric Circuits
Emf induced in a coil rotating in a uniform magnetic field will be maximum when the

 rate of change of flux linkage is minimum.
 flux linking with the coil is maximum.
 rate of cutting flux by coil sides is minimum.
 rate of change of flux linkage is maximum.

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Electric Circuits
Five capacitors each of 5 µF are connected in series, the equivalent capacitance of the system will be

 5 µF
 1 µF
 10 µF
 25 µF

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MORE MCQ ON Electric Circuits

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