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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
1.5
0.5
0.6
1
1.5
0.5
0.6
1
Answer
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Related Question
Current Electricity
With rise in temperature the resistance of pure metals
Decreases
Increases
Remains constant
First increases and then decreases
Decreases
Increases
Remains constant
First increases and then decreases
Answer
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Current Electricity
For which of the following 'ampere second' could be the unit?
Power
Energy
Reluctance
Charge
Power
Energy
Reluctance
Charge
Answer
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Current Electricity
Sparking occurs when a load is switched off because the circuit has high
Resistance
Impedance
Inductance
Capacitance
Resistance
Impedance
Inductance
Capacitance
Answer
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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
If the number of valence electrons of an atoms is less than 4,the substance is usually
An insulator
None of the listed here
A semiconductor
A conductor
An insulator
None of the listed here
A semiconductor
A conductor
Answer
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