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Current Electricity

Current Electricity
Which of the following is the best conductor of electricity?

Gold
Zinc
Silver
Copper

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Current Electricity
A resistance having rating 10 ohms , 10 W is likely to be a

Metallic resistor
Carbon resistor
Variable resistor
Wire wound resistor

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Current Electricity
The minimum charge on an ion is

Equal to the atomic number of the atom
Equal to the charge of an electron
None of these
Equal to the charge of the number of electrons in an atom (#) zero

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Current Electricity
With rise in temperature the resistance of pure metals

Decreases
Remains constant
First increases and then decreases
Increases

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Current Electricity
An electric filament bulb can be worked from

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

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Current Electricity
If an electric current is passed through a nerve, the man

Is excited
Begins to laugh
Begins to weep
Becomes insensitive to pain

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