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Current Electricity
Which method can be used for absolute measurement of resistances?
Wheastone bridge method
Releigh method
Lorentz method
Ohm's law method
Wheastone bridge method
Releigh method
Lorentz method
Ohm's law method
Answer
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Related Question
Current Electricity
The resistance of human body is about
10 ohm
25 ohm
200 ohm
1000 ohm
10 ohm
25 ohm
200 ohm
1000 ohm
Answer
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Current Electricity
The resistance of a copper wire 200 m long is 21 ω. If its thickness (diameter) is 0.44 mm, its specific resistance is around
1.8 x 10-8 ω-m
1.2 x 10-8 ω-m
1.4 x 10-8 ω-m
1.6 x 10-8 ω-m
1.8 x 10-8 ω-m
1.2 x 10-8 ω-m
1.4 x 10-8 ω-m
1.6 x 10-8 ω-m
Answer
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Current Electricity
The filament of electrical bulb is made of
Steel
Nickel
Aluminium
Tungsten
Steel
Nickel
Aluminium
Tungsten
Answer
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Current Electricity
The maximum current rating for a 10 kΩ, 0.5 W resistor is
0.707 mA
14.14 mA
7.07 mA
28.28 mA
0.707 mA
14.14 mA
7.07 mA
28.28 mA
Answer
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Current Electricity
The hot wire of electric bulb's filament is higher than its cold resistance because the temperature co-efficient of filament is
Positive
Negative
None of the listed here
Zero
Positive
Negative
None of the listed here
Zero
Answer
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