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Electric Circuits

Electric Circuits
The electron is lighter than a proton by a factor of about

 18.4.
 1840.
 184.
 18400.

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Electric Circuits
The time required for a pulse to change from 10 % to 90 % of its maximum value is known as

 decay time.
 rise time.
 run time.
 fall time.

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Electric Circuits
Which law(s) find application in electrolysis?

 Gausss law.
 Ohms law.
 Coulombs law.
 Faradays law.

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Electric Circuits
In a capacitive circuit, the capacitive reactance is

 directly proportional to frequency
 indirectly proportional to frequency
 directly proportional to the square of frequency
 indirectly proportional to the square of frequency

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Electric Circuits
A series RLC circuit is connected across a 240V, 50 Hz supply. When the voltage across capacitor is 250V, a maximum current of 0.5A flows in the circuit. Find the resistance.

 100 Ohms.
 500 Ohms.
 1000 Ohms.
 480 Ohms.

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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?

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

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