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Electric Circuits

Electric Circuits
From the given figure find the R3

 25 kilo ohm
 25 mega ohm
 25 mili ohm
 25 ohm

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Electric Circuits
In an AC circuit, containing pure inductance, the voltage applied is 120 V, 50 Hz while the current is 10 A. Find the value of inductance.

 38 mH.
 35 mH.
 34 mH.
 30 mH.

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Electric Circuits
The energy required to charge a 10 μF capacitor to 100 V is

 0.01 J.
 0.05 J.
 5 × 10-9 J.
 10 × 10-9 J.

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Electric Circuits
The life of a lead acid battery is expected to be

 2 to 5 years.
 6 months.
 10 to 15 years.
 1 year.

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Electric Circuits
In RLC series circuit if the Q factor is 1, then the damping of the system is

 Over damping
 Undamping
 Critical damping
 Under damping

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Electric Circuits
Two resistances R1 and R2 give combined resistances 4.5 Ω and 1 Ω when they are connected in series and parallel respectively. What would be the values of these resistances?

 6 Ω and 9 Ω.
 3 Ω and 9 Ω.
  1.5 Ω and 3 Ω.
  3 Ω and 6 Ω.

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