ELECTRIC CIRCUITS QUIZ

In RLC parallel circuit to get Q>1 which of the following is required?

XL=R

All of these

XL

XL>R

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When the internal resistance of a cell is large compared to the external resistance in the circuit then high current can flow through the external resistance by grouping the cells

as in series.

in either series or parallel.

mixed.

in parallel.

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

0.01 A.

1 A.

0.1 A.

0.316 A.

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What is the value of charge of an electron?

1.6022 × 10-19 Coulomb

1.6022 × 10-8 Coulomb

1.6022 × 10-27 Coulomb

1.6022 × 10-7 Coulomb

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If the practical units of voltage and current wave each made 20 times as large as they are at present, what would be the consequent alternation in the size of the unit of capacitance?

20 times.

200 times.

60 times.

Nil.

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Energy efficiency during electroplating is usually in the range

85 to 90%.

50 to 80%.

90 to 99%.

80 to 85%.

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Bulb in street lighting are connected in

series.

series parallel.

end of end.

parallel.

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Which of following capacitor will have least value of breakdown voltage?

Paper.

Mica.

Electrolytic.

Ceramic.

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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.

1000 Ohms.

480 Ohms.

100 Ohms.

500 Ohms.

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Current efficiency in electroplating is usually

99 %.

50 to 60 %.

70 to 80 %.

90 to 98 %.

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