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Current Electricity

Current Electricity
Which of the following is the best conductor of electricity?

Copper
Zinc
Silver
Gold

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Current Electricity
Resistance of a tungsten lamp _____ as applied voltage increases.

None of the listed here
Remains same
Increases
Decreases

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Current Electricity
SI unit of power is

Coulomb
Watt-hour
Watt
Henry

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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
1
0.6

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Current Electricity
Voltage dependent resistors are used

To suppress surges
For inductive circuits
As current stabilizers
As heating elements

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Current Electricity
Two lamps 100 W and 40 W are connected in series across 230 V (alternating). Which of the following statement is correct?

40 W lamp will fuse
100 W lamp will glow brighter
Both lamps will glow equally bright
40 W lamp will glow brighter

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