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Current Electricity

Current Electricity
Nichrome wire is an alloy of

Chromium and vanadium
Lead and zinc
Nickel and chromium
Copper and silver

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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

33 V
80 V
66 V
132 V

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Current Electricity
Eureka has _______ temperature co-efficient of resistance.

Negative
Positive
None of the listed here
Almost 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

Negative
None of the listed here
Positive
Zero

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Current Electricity
It becomes more difficult to remove

Second electron from the orbit
Third electron from the orbit
Any electron from the orbit
First electron from the orbit

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Current Electricity
The resistance of a straight conductor is independent of

Temperature
Material
Cross-sectional area
Shape of cross-section

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