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Current Electricity
Which of the following materials has the least resistivity ?
Lead
Copper
Zinc
Mercury
Lead
Copper
Zinc
Mercury
Answer
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Related Question
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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Current Electricity
A light bulb draws 300 mA when the voltage across it is 240 V. The resistance of the light bulb is
1000 Ω
600 Ω
400 Ω
800 Ω
1000 Ω
600 Ω
400 Ω
800 Ω
Answer
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Current Electricity
Whether circuit may be AC. or D.C. one, following is most effective in reducing the magnitude of the current.
Capacitor
Reactor
Resistor
Inductor
Capacitor
Reactor
Resistor
Inductor
Answer
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Current Electricity
The SI unit of power is
Coulomb
Watt
Watt-hour
Henry
Coulomb
Watt
Watt-hour
Henry
Answer
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Current Electricity
A wire having very high value of conductance is said to be
None of the listed here
Very good conductor
Insulator
Moderately good conductor
None of the listed here
Very good conductor
Insulator
Moderately good conductor
Answer
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