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Current Electricity

Current Electricity
Temperature coefficient of resistance is expressed in terms of

mhos/ohm°C
ohms/ohm°C
mhos/°C
ohms/°C

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Current Electricity
The resistance of a few meters of wire conductor in closed electrical circuit is

Practically zero
Very high
Low
High

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Current Electricity
Conductivity is the reciprocal of

Current density
Resistance
Resistivity
None of the listed here

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Current Electricity
The insulation on a current carrying conductor is provided

None of above factors
To prevent leakage of current
Both of the listed here
To prevent shock

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Current Electricity
Eureka has _______ temperature co-efficient of resistance.

Almost zero
Negative
None of the listed here
Positive

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

True component of power
Losses
Input power
kWh consumed

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