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Electric Circuits

Electric Circuits
A coil with negligible resistance has 50 V across it with 10 mA. The inductive reactance is

 50 ohms.
 5000 ohms.
 1000 ohms.
 500 ohms.

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Electric Circuits
To reduce hysteresis loss, we use

 laminated sheets.
 copper bars.
 CRGO steel.
 soft-iron.

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Electric Circuits
Consider the following circuit. What is the value of i ?

 - 5 A.
  5 A.
 12 A.
 6 A.

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Electric Circuits
Condition of symmetry in Z-parameter representation is

 Z12 = Z22.
 Z12 = Z21.
 Z11 = Z12.
 Z11 = Z22.

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Electric Circuits
The absolute charge of an electron is

 1.6 × 10-19 C.
 - 1.6 × 10-19 C.
 + 1.6 × 10-19 C.
 none of above.

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Electric Circuits
Three parallel resistive branches are connected across a DC supply. The ratio of the branch resistances are given as R1:R2:R3 :: 2:4:6. The ratio of the branch currents is

 2:3:6.
 6:4:2.
 6:3:2.
 2:4:6.

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