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Electric Circuits

Electric Circuits
Which property is used to oppose the flow of current ?

 Inductance
 Capacitance
 Poteintial difference
 Resistance

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Electric Circuits
The electrical conductivity of metal is typically of the order of (in ohm - m)

 105.
 107.
 10 - 4.
 10 - 6.

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Electric Circuits
Kirchhoff’s voltage law is used for

 finding equivalent resistance.
 nodal analysis.
 loop analysis.
 representing a current source.

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Electric Circuits
Condition of symmetry in ABCD parameter representation is

 AD - BC = 1.
 B = D.
 A = D.
 C = D.

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Electric Circuits
Two identical resistors are first connected in parallel then in series. The ratio of resultant resistance of the first combination to the second will be

 0.5.
 0.25.
 4.
 2.

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Electric Circuits
Four bulbs of 40 W each are connected in series with a battery across them, which of the following statement is true?

 The voltage across each bulb is not same.
 The current through each bulb is same.
 The power dissipation in each bulb is not same.
None of these

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