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Current Electricity

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

150 V
200 V
100 V
50 V

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Current Electricity
Electric pressure is also called

Energy
Voltage
Resistance
Power

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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?

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

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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

Zero
Positive
Negative
None of the listed here

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Current Electricity
A rheostat differs from potentiometer in the respect that it

Has lower wattage rating
Has large number of turns
Has higher wattage rating
Offers large number of tapping

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Current Electricity
Ampere-hour is the unit of

Energy
Strength of current
Quantity of electricity
Power

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MORE MCQ ON Current Electricity

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