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Current Electricity
The resistance of human body is about
200 ohm
10 ohm
25 ohm
1000 ohm
200 ohm
10 ohm
25 ohm
1000 ohm
Answer
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Related Question
Current Electricity
What voltage drop will be there across a 1 kW electric heater whose resistance when hot is 40 Ω?
200 V
150 V
100 V
50 V
200 V
150 V
100 V
50 V
Answer
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Current Electricity
At 0 K, germanium behaves as
A ferromagnetic substance
A superconductor
A conductor
An insulator
A ferromagnetic substance
A superconductor
A conductor
An insulator
Answer
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Current Electricity
Two lamps 100 W and 40 W are connected in series across 230 V. Which of the following statement is correct?
40 W lamp will fuse
40 W lamp will glow brighter
Both lamps will glow equally bright
100 W lamp will glow brighter
40 W lamp will fuse
40 W lamp will glow brighter
Both lamps will glow equally bright
100 W lamp will glow brighter
Answer
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Current Electricity
The resistance of a conductor varies inversely as
Resistivity
Are of cross-section
Length
Temperature
Resistivity
Are of cross-section
Length
Temperature
Answer
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Current Electricity
In which of the following substances the resistance decreases with increase in temperature?
Carbon
Copper
Silver
Constantan
Carbon
Copper
Silver
Constantan
Answer
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