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Electric Circuits

Electric Circuits
The voltage across the 1kΩ resistor between the nodes A and B of the network shown in the given figure is

 -2 V.
 -1 V.
 1 V.
 2 V.

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Electric Circuits
R1 = 36 Ω and R2 = 75 Ω, each having tolerance of ±5% are connected in series. The value of resultant resistance is

 111 ± 2.77 Ω.
 111 ± 7.23 Ω.
  111 ± 0 Ω.
  111 ± 5.55 Ω.

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Electric Circuits
A coil of negligible resistance has an induction of 100 mH. The current passing through the coil changes from 2 A to 4 A at a uniform rate in 0.1 sec the voltage across the coil during this time would be __________ V.

 36
 2
 8
 50

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Electric Circuits
Which cell has the reversible chemical reaction?

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

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Electric Circuits
A balanced delta connected load has an impedance of 9∠30o Ω per phase. What is the impedance per phase of its equivalent star?

 27∠30o Ω
 3∠30o Ω.
None of these
 30∠30o Ω.

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Electric Circuits
For the circuit shown below the value of R is adjusted so as to make the current in RL equal to zero. Calculate the value of R.

 2 Ω.
 4 Ω.
 3 Ω.
 1 Ω.

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