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Current Electricity

Current Electricity
The current in the circuit having constant resistance is tripled. The power increases

1/9 times
3 times
1/3 times
9 times

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Current Electricity
A resistance having rating 10 ohms , 10 W is likely to be a

Metallic resistor
Wire wound resistor
Carbon resistor
Variable resistor

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Current Electricity
What voltage drop will be there across a 1 kW electric heater whose resistance when hot is 40 Ω?

50 V
150 V
100 V
200 V

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Current Electricity
One Newton meter is same as

One watt
One joule second
One joule
Five joules

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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

1.2 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

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Current Electricity
An electric filament bulb can be worked from

DC supply only
Battery supply only
AC supply only
All of the listed here

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MORE MCQ ON Current Electricity

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