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Electric Circuits

Electric Circuits
A capacitor carries a charge of 0.1 C at 5 V. Its capacitance is

 0.05 F
 0.2 F
 0.5 F
 0.02 F

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Electric Circuits
In RL series circuit R=2Ω and L=2mH. What is the value of time constant?

 2msec
 1msec
 100sec
 4msec

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Electric Circuits
If a resistor is connected across the voltage source and the frequency of voltage and current wave form is 50Hz, then what is frequency of instantaneous power

 0 Hz.
 50 Hz.
 150 Hz.
 100 Hz.

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Electric Circuits
A series circuit consists of R = 20 Ω, L = 20 mH, and AC supply 60 V with f = 100 Hz. The current in R is

 10.16 A.
 1.27 A.
 5.08 A.
 2.54 A.

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Electric Circuits
Two resistances R1 and R2 are connected in series across the voltage source where R1 > R2. The largest drop will be across

 either R1 or R2.
 R1.
 none of them.
 R2.

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Electric Circuits
At which of the following frequency voltage across capacitor has maximum value for series circuit ?

 Equal to resonance frequency
 Zero frequency
 Greater than resonance frequency
 Less than resonance frequency

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