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Current Electricity

Current Electricity
Nichrome wire is an alloy of

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

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Current Electricity
Temperature coefficient of resistance is expressed in terms of

ohms/ohm°C
mhos/ohm°C
ohms/°C
mhos/°C

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Current Electricity
No current flow between two charged bodies if they have same

Charge
Potential
Capacity
None of the listed here

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Current Electricity
An electric filament bulb can be worked from

DC supply only
Battery supply only
AC supply only
All of the listed here

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Current Electricity
Two lamps 100 W and 40 W are connected in series across 230 V. Which of the following statement is correct?

100 W lamp will glow brighter
40 W lamp will fuse
40 W lamp will glow brighter
Both lamps will glow equally bright

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Current Electricity
Which of the following materials has the least resistivity ?

Lead
Copper
Zinc
Mercury

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