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Current Electricity

Current Electricity
An instrument which detects electric current is known as

Rheostat
Galvanometer
Voltmeter
Wattmeter

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Current Electricity
A wire having very high value of conductance is said to be

None of the listed here
Moderately good conductor
Very good conductor
Insulator

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Current Electricity
SI unit of power is

Coulomb
Watt
Watt-hour
Henry

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Current Electricity
The thickness of insulation provided on the conductor depends on

None of the listed here
The magnitude of current flowing through it
Both magnitude of voltage and current
The magnitude of voltage on the conductor

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

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

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Current Electricity
Which of the following statement is true both for a series and a parallel D.C. circuit?

Currents are additive
Voltages are additive
Power are additive
Elements have individual currents

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