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Current Electricity

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

132 V
66 V
33 V
80 V

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Current Electricity
The resistance of a conductor varies inversely as

Are of cross-section
Temperature
Length
Resistivity

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

0.707 mA
28.28 mA
7.07 mA
14.14 mA

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

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

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Current Electricity
Insulators have _______ temperature co-efficient of resistance.

None of the listed here
Negative
Positive
Zero

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Current Electricity
The hot wire of electric bulb's filament is higher than its cold resistance because the temperature co-efficient of filament is

None of the listed here
Negative
Positive
Zero

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MORE MCQ ON Current Electricity

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