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Current Electricity
The resistance of conductor varies inversely as
Temperature
Resistivity
Length
Area of cross-section
Temperature
Resistivity
Length
Area of cross-section
Answer
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Related Question
Current Electricity
A copper wire is stretched so that its length is increased by 0.1 % . The change in its resistance is
0.4%
0.3%
None of the listed here
0.2%
0.4%
0.3%
None of the listed here
0.2%
Answer
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Current Electricity
Varistors are
Non-linear resistors
Insulators
Resistor with zero temperature co-efficient
Carbon resistors
Non-linear resistors
Insulators
Resistor with zero temperature co-efficient
Carbon resistors
Answer
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Current Electricity
What voltage drop will be there across a 1 kW electric heater whose resistance when hot is 40 Ω?
50 V
150 V
200 V
100 V
50 V
150 V
200 V
100 V
Answer
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Current Electricity
The weight of an aluminium conductor as compared to a copper conductor of identical cross-section, for the same electrical resistance, is
0.6
1.5
1
0.5
0.6
1.5
1
0.5
Answer
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Current Electricity
Nichrome wire is an alloy of
Lead and zinc
Copper and silver
Chromium and vanadium
Nickel and chromium
Lead and zinc
Copper and silver
Chromium and vanadium
Nickel and chromium
Answer
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