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Current Electricity
The resistance of a conductor varies inversely as
Temperature
Length
Resistivity
Are of cross-section
Temperature
Length
Resistivity
Are of cross-section
Answer
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Related Question
Current Electricity
Which of the following materials has the least resistivity ?
Lead
Zinc
Mercury
Copper
Lead
Zinc
Mercury
Copper
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
The specific resistance of a metallic conductor ______ with rise in temperature.
Remains unchanged
Increases
Decreases
None of the listed here
Remains unchanged
Increases
Decreases
None of the listed here
Answer
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Current Electricity
Insulators have _______ temperature co-efficient of resistance.
Positive
Zero
Negative
None of the listed here
Positive
Zero
Negative
None of the listed here
Answer
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Current Electricity
International ohm is defined in terms of the resistance of
A cube of copper
A column of mercury
The unit length of wire
A cube of carbon
A cube of copper
A column of mercury
The unit length of wire
A cube of carbon
Answer
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