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Current Electricity

Current Electricity
In a lamp load when more than one lamp are switched on the total resistance of the load

Remains same
None of these
Increases
Decreases

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Current Electricity
An electric filament bulb can be worked from

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

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Current Electricity
At 0 K, germanium behaves as

A ferromagnetic substance
An insulator
A superconductor
A conductor

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

Zinc
Mercury
Copper
Lead

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Current Electricity
A current of 16 amperes divides between two branches in parallel of resistances 8 ohms and 12 ohms respectively. The current in each branch is

6.4 A, 9.6 A
4.6 A, 6.9 A
4.6 A, 9.6 A
6.4 A, 6.9 A

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Current Electricity
Resistance of a material always decreases if

Number of free electrons available becomes more
None of these
Temperature of material is decreased
Temperature of material is increased

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MORE MCQ ON Current Electricity

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