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Electric Circuits

Electric Circuits
Which cell has the reversible chemical reaction?

 Mercury oxide.
 Lead acid.
 Silver oxide.
 Carbon Zinc.

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Electric Circuits
Kirchhoff’s current law is used for

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

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Electric Circuits
A 3 – φ delta connected symmetrical load consumes P Watts of power from a balanced supply. If the same load is connected in star to the same supply then what is the power consumption?

 P/3.
 √3P.
 P.
 3P.

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Electric Circuits
If two point charges are denoted by + Q and - Q and distance between this charges is d, then the dipole moment P equal to

  Q × d.
  Q2 / d.
  Q / d2.
  Q2 × d.

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Electric Circuits
A parallel plate capacitor has a capacitance of C farad. It area of the plates is doubled and the distance between them is half, the capacitance of the capacitor is

 16C Farad.
 4C Farad.
 C Farad.
 2C Farad.

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Electric Circuits
In question no.3, which of the following is true ?

 ic (0+) = i(0+).
 None of these.
 i(0+)= iL(0+).
 iL(0) = ic (0).

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