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Current Electricity
In which of the following substances the resistance decreases with increase in temperature?
Copper
Silver
Constantan
Carbon
Copper
Silver
Constantan
Carbon
Answer
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Related Question
Current Electricity
The thickness of insulation provided on the conductor depends on
The magnitude of current flowing through it
Both magnitude of voltage and current
The magnitude of voltage on the conductor
None of the listed here
The magnitude of current flowing through it
Both magnitude of voltage and current
The magnitude of voltage on the conductor
None of the listed here
Answer
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Current Electricity
The current in the circuit having constant resistance is tripled. The power increases
9 times
1/3 times
3 times
1/9 times
9 times
1/3 times
3 times
1/9 times
Answer
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Current Electricity
Electric current passing through the circuit produces
Thermal effect
Luminous effect
Magnetic effect
Chemical effect
Thermal effect
Luminous effect
Magnetic effect
Chemical effect
Answer
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Current Electricity
Resistance of a tungsten lamp _____ as applied voltage increases.
Decreases
Increases
Remains same
None of the listed here
Decreases
Increases
Remains same
None of the listed here
Answer
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Current Electricity
A closed switch has a resistance of
Infinity
About 50 ohms
About 500 ohms
Zero
Infinity
About 50 ohms
About 500 ohms
Zero
Answer
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