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Current Electricity
With three resistances connected in parallel, if each dissipates 20 W the total power supplied by the voltage source equals
40 W
20 W
10 W
60 W
40 W
20 W
10 W
60 W
Answer
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Related Question
Current Electricity
The resistance of a straight conductor is independent of
Shape of cross-section
Cross-sectional area
Material
Temperature
Shape of cross-section
Cross-sectional area
Material
Temperature
Answer
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Current Electricity
Which method can be used for absolute measurement of resistances?
Ohm's law method
Wheastone bridge method
Lorentz method
Releigh method
Ohm's law method
Wheastone bridge method
Lorentz method
Releigh method
Answer
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Current Electricity
Three 60 W bulbs are in parallel across the 60 V power line. If one bulb burns open
The other two bulbs will light
There will be heavy current in the main line
Rest of the two bulbs will not light
All three bulbs will light
The other two bulbs will light
There will be heavy current in the main line
Rest of the two bulbs will not light
All three bulbs will light
Answer
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Current Electricity
Which of the following material has nearly zero temperature co-efficient of resistance?
Copper
Manganin
Carbon
Porcelain
Copper
Manganin
Carbon
Porcelain
Answer
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Current Electricity
Resistance of a tungsten lamp _____ as applied voltage increases.
Decreases
None of the listed here
Increases
Remains same
Decreases
None of the listed here
Increases
Remains same
Answer
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