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Electric Circuits

Electric Circuits
Which material has extremely large resistance?

 Conductor
 Semiconductor
 Insulator
None of these

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Electric Circuits
Five capacitors each of 5 µF are connected in series, the equivalent capacitance of the system will be

 1 µF
 10 µF
 5 µF
 25 µF

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Electric Circuits
A 100 ohm resistor is directly connected across a 80 V battery. What is the power dissipation?

 1 W.
 10 W.
  64 W.
 5 W.

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Electric Circuits
The power dissipated in a pure capacitor is

 both (B) and (C) above.
 zero.
 proportional to applied voltage.
 proportional to the value of capacitance.

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Electric Circuits
If N is the number of nodes and b is the number of branches in a network, then rank of tie set matrix is

 N.
 b - N - 1.
 b - N + 1.
 N - 1.

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Electric Circuits
In RLC series circuit R = 2Ω, L = 2mH and C = 1μF. Find the time constant of the circuit?

 1 μsec
 4 msec
 2 msec
 2 μsec

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