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Current Electricity
With rise in temperature the resistance of pure metals
First increases and then decreases
Increases
Remains constant
Decreases
First increases and then decreases
Increases
Remains constant
Decreases
Answer
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Related Question
Current Electricity
An electrical lamp coonsumes 100 W of power. If the supply voltage is 220 V the energy consumed in 30 minutes is
5 kWh
5 kWh
0.005 kWh
0.05 kWh
5 kWh
5 kWh
0.005 kWh
0.05 kWh
Answer
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Current Electricity
Current velocity through a copper conductor is
of the order of a few ^.s/m
independent of current strength
nearly 3 x 108 m/s
the same as propagation velocity of electric energy
of the order of a few ^.s/m
independent of current strength
nearly 3 x 108 m/s
the same as propagation velocity of electric energy
Answer
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Current Electricity
If an electric current is passed through a nerve, the man
Becomes insensitive to pain
Begins to weep
Begins to laugh
Is excited
Becomes insensitive to pain
Begins to weep
Begins to laugh
Is excited
Answer
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Current Electricity
Ampere-hour is the unit of
Quantity of electricity
Strength of current
Energy
Power
Quantity of electricity
Strength of current
Energy
Power
Answer
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Current Electricity
A copper wire is stretched so that its length is increased by 0.1 % . The change in its resistance is
0.4%
None of the listed here
0.3%
0.2%
0.4%
None of the listed here
0.3%
0.2%
Answer
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