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Electric Circuits

Electric Circuits
What is mean by flow of electrons?

 Insulator.
 Voltage.
 Electric current.
 Semiconductor.

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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?

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

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Electric Circuits
A 35 V source is connected to a series circuit of 600 Ω and R as shown. If a voltmeter of internal resistance 1.2 kΩ is connected across 600 Ω resistor, it reads 5 V. The value of R is

 1.2 k Ω.
 2.4 k Ω.
 3.6 k Ω.
 7.2 k Ω.

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Electric Circuits
Time constant of RC series circuit is

 2L/R
 RC
 2RC
 L/R

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Electric Circuits
In series R, L circuit power factor can be defined as

 Vr/V
 R/Z
 P/S
All of these

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Electric Circuits
In the circuit given below the value of resistance Req is

 25 Ω.
 10 Ω.
 11.86 Ω.
 11.18 Ω.

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MORE MCQ ON Electric Circuits

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