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Current Electricity

Current Electricity
The electrical energy required to heat a bucket of water to a certain temperature is 4 kWh. If the heat losses are 20 percent, the energy input is

2 kWh
6 kWh
5 kWh
3.2 kWh

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Current Electricity
Ampere-hour is the unit of

Power
Energy
Strength of current
Quantity of electricity

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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

1.6 x 10-8 ω-m
1.2 x 10-8 ω-m
1.8 x 10-8 ω-m
1.4 x 10-8 ω-m

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Current Electricity
One Newton meter is same as

One joule
One joule second
Five joules
One watt

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Current Electricity
The maximum current rating for a 10 kΩ, 0.5 W resistor is

28.28 mA
0.707 mA
14.14 mA
7.07 mA

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Current Electricity
For testing appliances, the wattage of test lamp should be

Very low
High
Low
Any value

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MORE MCQ ON Current Electricity

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