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Electric Circuits

Electric Circuits
Which of the following has least resistivity?

 Lead.
 Mercury.
 Aluminium.
 Copper.

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Electric Circuits
An electric field line and an equipotential surface are

 inclined at any angle.
 always perpendicular.
 always parallel.
 none of above.

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Electric Circuits
In RLC series circuit, at resonance condition the value of current is

 Zero
 Minimum
None of these
 Maximum

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Electric Circuits
Which of the following quantities remain the same in all parts of a parallel circuit

 resistance.
 power.
 current.
 voltage.

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Electric Circuits
In delta connected circuit when one resistor is open, then power will be

 0.
 increased by factor of 3.
  remain unchanged.
 reduced by the factor of 3.

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Electric Circuits
The common voltage across parallel branches with different voltage sources can be determined by the relation V = (V1 / R1 + V2 / R2 + V3 / R3) / (1 / R1 + 1 / R2 +1 / R3 .....) The statement is associated with which theorem?

 Millman’s theorem.
 Superposition theorem.
 Norton’s theorem.
 Thevenin’s theorem.

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