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Current Electricity

Current Electricity
If the efficiency of a machine is to be high, what should be low?

kWh consumed
True component of power
Losses
Input power

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Current Electricity
Temperature coefficient of resistance is expressed in terms of

ohms/°C
mhos/ohm°C
ohms/ohm°C
mhos/°C

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Current Electricity
The flow of current in solids is due to

Nucleus
Electrons
Atoms
Electrons and ions

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Current Electricity
A light bulb draws 300 mA when the voltage across it is 240 V. The resistance of the light bulb is

1000 Ω
400 Ω
800 Ω
600 Ω

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Current Electricity
An open resistor, when checked with an ohmmeter reads

Zero
High but within tolerance
Low but not zero
Infinite

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Current Electricity
Conductivity is the reciprocal of

Resistivity
Current density
Resistance
None of the listed here

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MORE MCQ ON Current Electricity

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