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Current Electricity

Current Electricity
A copper wire is stretched so that its length is increased by 0.1 % . The change in its resistance is

0.3%
0.4%
0.2%
None of the listed here

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Current Electricity
Two bulbs of 500 W and 200 W rated at 250 V will have resistance ratio as

2 : 5
4 : 25
5 : 2
25 : 4

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Current Electricity
Ohm's law is not applicable to

High currents
Small resistors
Semi-conductors
Dc circuits

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Current Electricity
The maximum current rating for a 10 kΩ, 0.5 W resistor is

7.07 mA
28.28 mA
14.14 mA
0.707 mA

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Current Electricity
In a circuit a 33 Q resistor carries a current of 2 A. The voltage across the resistor is

66 V
33 V
80 V
132 V

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Current Electricity
Resistance of 220 V, 100 W lamp will be

484 ft
4.84 Q
48.4 Q
4840 Q

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MORE MCQ ON Current Electricity

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