A. A. C.
B. D. C.
C. any of above two
D. none of the above
Related Mcqs:
- When electric current passes through a metallic conductor, its temperature rises. This is due to__________?
A. collisions between conduction electrons and atoms
B. the release of conduction electrons from parent atoms
C. mutual collisions between metal atoms
D. mutual collisions between conducting electrons - In an electric kettle water boils in 10 m minutes. It is required to boil the boiler in 15 minutes, using same supply mains______________?
A. length of heating element should be decreased
B. length of heating element should be increased
C. length of heating element has no effect on heating if water
D. none of the above - The property of a conductor due to which it passes current is called___________?
A. resistance
B. reluctance
C. conductance
D. inductance - An instrument which detects electric current is known as_____________?
A. voltmeter
B. rheostat
C. wattmeter
D. galvanometer - Electric current passing through the circuit produces_____________?
A. magnetic effect
B. luminous effect
C. thermal effect
D. chemical effect
E. all above effects - When current flows through heater coil it glows but supply wiring does not glow because______________?
A. current through supply line flows at slower speed
B. supply wiring is covered with insulation layer
C. resistance of heater coil is more than the supply wires
D. supply wires are made of superior material - Electric pressure is also called________?
A. resistance
B. power
C. voltage
D. energy - The filament of an electric bulb is made of______________?
A. carbon
B. aluminium
C. tungsten
D. nickel - An electric filament bulb can be worked from____________?
A. D. C. supply only
B. A. C. supply only
C. Battery supply only
D. All above - The resistance of a few meters of wire conductor in closed electrical circuit is____________?
A. practically zero
B. low
C. high
D. very high
