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.Management Sciences
Category: Current Electricity
Internal resistance is the resistance offered by________________?
A. source of EMF
B. conductor
C. resistor
D. capacitor
In liquids and gases the current is due to the motion________________?
A. negative charges
B. positive charges
C. both negative and positive charges
D. neutral particles
The graphical representation of Ohms law is___________________?
A. hyperbola
B. ellipse
C. parabola
D. straight line
There are three bulbs of 60W 100W and 200W which bulb has thickest filament ?
A. 100W
B. 200W
C. 60W
D. all
One kilowatt hour is the amount of energy delivered during _______________?
A. one second
B. one day
C. one minute
D. one hour
Electrical energy is converted to heat at the rate of___________________?
A. IRt
B. I2R
C. I2Rt
D. VIt
If 1 ampere current flows through 2m long conductor the charge flow through it in 1 hour will be_______________?
A. 3600C
B. 7200C
C. 1C
D. 2C
Electrical energy is measured in___________________?
A. watt
B. horse power
C. kilo watt
D. kilowatt hour
Resistance of a super conductor is ______________________?
A. finite
B. infinite
C. zero
D. changes with every conductor
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