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Electric Circuits

Electric Circuits
A 10 Ohm resistor has power rating of 1W. Find the maximum current rating.

 1 A.
 0.01 A.
 0.316 A.
 0.1 A.

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Electric Circuits
Absolute permittivity of dielectric medium is represented as

 εr
 εrε0
 ε0
 εr/ε0

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Electric Circuits
What is apparent power in AC operation?

 Product of voltage and current at no load.
 Product of rms voltage and rms current.
 Product of voltage and current.
 Product of voltage and current at full load.

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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.

 34 mH.
 38 mH.
 35 mH.
 30 mH.

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Electric Circuits
A capacitor is charged by a constant 10 mA current sources which is turned on for 1 second. Assuming the capacitor is initially charge free; determine the charge delivered to and the power supplied by the source if the capacitor has a value of 1 mF.

 0.1C, 100MW.
 0.01C and 5W.
 0.1C, 10MW.
 0.01C, 10MW.

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Electric Circuits
To obtain a high value of capacitance, the permittivity of dielectric medium should be

 unity
 high
 low
 zero

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