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Electric Circuits

Electric Circuits
A rectangular magnet of magnetic moment M is cut into two pieces of same length. The magnetic moment of each piece will be

 M / L.
 M.
 2 M.
 M / 2.

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Electric Circuits
Total instantaneous power supplied by a 3 - φ AC supply to a balanced RL load is

 constant.
 pulsating with non zero average.
 zero.
 pulsating with zero average.

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Electric Circuits
Average power taken by the pure capacitor is

 Minimum
 Zero
 Maximum
 Any of the above

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Electric Circuits
If 1 A current flows in a circuit, the number of electrons flowing through this circuit is

 1.6 × 10 - 19
 0.625 × 1019
 0.625 × 10 - 19
 1.6 × 1019

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Electric Circuits
In 2 port network Z12 = Z21 indicates which property

 bilateral.
 unilateral.
 non linear.
 linear.

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Electric Circuits
When AC flows through a pure capacitance then the current

 is in phase with emf.
 leads the emf by 90o.
 leads the emf by - 90o.
 lags the emf by 90o.

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