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Current Electricity

Current Electricity
Nichrome wire is an alloy of

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

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Current Electricity
Ohm's law is not applicable to

High voltage circuits
Carbon resistors
Vaccum tubes
Circuits with low current densities

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Current Electricity
For testing appliances, the wattage of test lamp should be

High
Very low
Any value
Low

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Current Electricity
Electrical current is due to the flow of

Both positive and negative charges
Neutral particles only
Negative charges only
Positive charges only

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Current Electricity
The specific resistance of a metallic conductor ______ with rise in temperature.

Increases
Decreases
None of the listed here
Remains unchanged

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Current Electricity
The filament of electrical bulb is made of

Steel
Nickel
Tungsten
Aluminium

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