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Current Electricity

Current Electricity
What voltage drop will be there across a 1 kW electric heater whose resistance when hot is 40 Ω?

50 V
200 V
100 V
150 V

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Current Electricity
The SI unit of power is

Coulomb
Watt
Watt-hour
Henry

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Current Electricity
One Newton meter is same as

One watt
One joule
Five joules
One joule second

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

Negative
None of the listed here
Almost zero
Positive

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Current Electricity
Temperature coefficient of resistance is expressed in terms of

mhos/ohm°C
ohms/°C
ohms/ohm°C
mhos/°C

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Current Electricity
In which of the following substances the resistance decreases with increase in temperature?

Carbon
Constantan
Silver
Copper

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