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Electric Circuits

Electric Circuits
Which material has extremely large resistance?

 Semiconductor
None of these
 Insulator
 Conductor

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Electric Circuits
A voltage source having an open circuit voltage of 100 V and internal resistance of 50 Ω is equivalent to a current source

 2 A with 50 Ω in parallel.
 0.5 A in parallel with 50 Ω.
 none of these.
 2 A with 50 Ω in series.

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Electric Circuits
The strength of current in 1 H inductor changes at rate of 1 A / sec. Find the voltage across it?

 0.5 V.
 None of these.
 2 V.
 1 V.

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Electric Circuits
You have to replace 1500 Ω resistor in radio. You have no 1500 Ω resistor but have several 1000 Ω ones which you would connect

 two in parallel and one in series.
 two in parallel.
 three in series.
 three in parallel.

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Electric Circuits
When 125 V is applied across a 250 V, 100 W filament incandescent bulbs, the power consumption is

 100 W.
 25 W.
 12.5 W.
 50 W.

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Electric Circuits
Given network is having N nodes and B branches, then number of twigs are

 N.
 N - 1.
 B - N + 1.
 B - N - 1.

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