The current through a metallic conductor is due to the motion of _________________?
A. free electrons
B. protons
C. neutrons
D. still under controversy
Physics MCQs with Answers
A wire having very high value of conductance is said to be____________________?
A. very good conductor
B. moderately good conductor
C. an insulator
D. no specific criterion available
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
Thermocouples convert___________________?
A. heat energy into electrical energy
B. heat energy into light energy
C. heat energy into mechanical energy
D. mechanical energy into heat energy
An immersion heater of 400 watts kept on for 5 hours will consume electrical power of __________________?
A. 2KWh
B. 20KWh
C. 6KWh
D. 12KWh
Resistance of an ideal insulator is __________________?
A. infinite
B. zero
C. finite
D. depends upon nature
Reciprocal of resistivity is called__________________?
A. resistance
B. inductance
C. conductivity
D. flexibility
Circuit which gives continuously varying potential is called _______________________?
A. complex network
B. wheat stone bridge
C. potential divider
D. all of above
There are three bulbs of 60W 100W and 200W which bulb has thickest filament ?
A. 100W
B. 200W
C. 60W
D. all
