A bulb rated 100 W, 220 V. The resistance of its filament while glowing is
250 Ω
100 Ω
484 Ω
625 Ω
1 Wh =
3600 J
3.6 x 106 J
360 J
3.6 J
The electric appliances in a house are connected in
series
parallel
either series or parallel
both in series and parallel
At what voltage is the electric power generated at the power generating station?
11 kV
25 kV
21 kV
40 kV
Current through a 12 V tungsten filament lamp connected to a 12 V accumulator of negligible resistance of 3 A. Calculate resistance of filament?
4 Ω
6 Ω
12 Ω
24 Ω
According to International convention of colour coding of insulation of wires in a cable :
live is red, neutral is blue and earth is brown
live is red, neutral is green and earth is black
live is brown, neutral is blue and earth is black
live is brown, neutral is light blue and earth is green
Circuit breaker device which can be used in place of fuse wire in domestic electric wiring is called
CBD
DCB
MCD
MCB
The on-off device used in circuit is
Fuse
Switch
3 pin plug
A bulb is rated as 100 W - 250 V. The safe limit of current through filament of bulb while glowing is
100 A
0.1 A
2.5 A
0.4 A
The bulb is rated as 100W - 250V, the resistance of its filament while glowing is,
2500 Ω
