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Current Electricity

Current Electricity
Conductance is reciprocal of

Reluctance
Resistance
Capacitance
Inductance

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

None of the listed here
Decreases
Remains unchanged
Increases

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Current Electricity
Resistance of 220 V, 100 W lamp will be

48.4 Q
4.84 Q
4840 Q
484 ft

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Current Electricity
With rise in temperature the resistance of pure metals

First increases and then decreases
Increases
Decreases
Remains constant

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Current Electricity
The minimum charge on an ion is

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

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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
Positive
None of the listed here
Zero

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