A. 144000J
B. 144J
C. 1.44J
D. 14J
Related Mcqs:
- There are three bulbs of 60W 100W and 200W which bulb has thickest filament ?
A. 100W
B. 200W
C. 60W
D. all - Which one of the following materials is useful for making bulb filaments ?
A. constantan
B. nichrome
C. copper
D. tungsten - 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 - The consumption of energy by a 60 watt bulb in 2 sec is_________________?
A. 120 J
B. 60 J
C. 30 J
D. 0.02 J - If a glass plate is inserted in between the plate of a capacitor in series with a lighted bulb the brightness of the bulb________________?
A. Remains same
B. Brightness increases
C. Brightness decreases
D. No light - 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 - One kilowatt hour is the amount of energy delivered during _______________?
A. one second
B. one day
C. one minute
D. one hour - The value of the steady current which when flowing through the same resistor produces heat at the same rate as the mean rate of heat produced by the alternating current is__________________?
A. Average current
B. Sinusoidal current
C. r.m.s current
D. Net current - One mega watt hour is equal to_________________?
A. 36 x 106 J
B. 36 x 1012 J
C. 36 x 109 J
D. 36 x 108 J - Electrical energy is converted to heat at the rate of___________________?
A. IRt
B. I2R
C. I2Rt
D. VIt
