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Current Electricity

Current Electricity
An electrical lamp coonsumes 100 W of power. If the supply voltage is 220 V the energy consumed in 30 minutes is

0.05 kWh
5 kWh
0.005 kWh
5 kWh

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Current Electricity
Specific resistance of a substance is measured in

Ω-m
Ω/m
None of the listed here
m/Ω

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Current Electricity
All good conductors have high

Thermal conductivity
Conductance
Resistance
Reluctance

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

None of the listed here
Remains unchanged
Decreases
Increases

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Current Electricity
Ohm's law is not applicable to

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

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Current Electricity
An instrument which detects electric current is known as

Rheostat
Voltmeter
Wattmeter
Galvanometer

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