The number of electrons in the outer most orbit of carbon atom is___________?
The number of electrons in the outer most orbit of carbon atom is___________?
A. 3
B. 4
C. 6
D. 7
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An instrument which detects electric current is known as_____________?
An instrument which detects electric current is known as_____________?
A. voltmeter
B. rheostat
C. wattmeter
D. galvanometerThe resistance of a few meters of wire conductor in closed electrical circuit is____________?
The resistance of a few meters of wire conductor in closed electrical circuit is____________?
A. practically zero
B. low
C. high
D. very highWhich quantity consists of a unit 1KWh ?
Which quantity consists of a unit 1KWh ?
A. Energy
B. Time
C. Power
D. Charge1 kWh is the amount of energy used by a 1 kW (1000 watt) resistance for 1 hour. Energy = Power × Time.
The condition for the validity under Ohm’s law is that_______________?
The condition for the validity under Ohm’s law is that_______________?
A. resistance must be uniform
B. current should be proportional to the size of the resistance
C. resistance must be wire wound type
D. temperature at positive end should be more than the temperature at negative endOhm’s law is not applicable to____________?
Ohm’s law is not applicable to____________?
A. vacuum tubes
B. carbon resistors
C. high voltage circuits
D. circuits with low current densitiesA substance whose molecules consist of dissimilar atoms is called____________?
A substance whose molecules consist of dissimilar atoms is called____________?
A. semi-conductor
B. super-conducto
C. compound
D. insulator