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.Management Sciences
Category: Current Electricity
In the following figure, the terminal potential is ___________________ ?
A. zero
B. 2V
C. 12V
D. 36V
Which one of the following bulbs has the least resistance ?
A. 100 watt
B. 200 watt
C. 300 watt
D. 60 watt
Resistance of a wire on increasing its temperature will_________________?
A. increase with rise in temperature
B. decrease with rise in temperature
C. will remain same
D. depends upon altitude of experimentation
Resistance of an ideal insulator is __________________?
A. infinite
B. zero
C. finite
D. depends upon nature
The current through a metallic conductor is due to the motion of _________________?
A. free electrons
B. protons
C. neutrons
D. still under controversy
An immersion heater of 400 watts kept on for 5 hours will consume electrical power of __________________?
A. 2KWh
B. 20KWh
C. 6KWh
D. 12KWh
Production of heat due to an electric current flowing through a conductor is given by _________________?
A. Joule effect
B. Joule Thomsons effect
C. Comptons effect
D. Feed back effect
Three bulbs are rating 40W 60W and 100W designed to work on 220V mains. Which bulb will burn most brightly if they are connected in series across 220 V mains ?
A. 40 W bulb
B. 60 W blub
C. 100 W blub
D. all will burn equally brightly
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