1 Wh =
3600 J
3.6 x 106 J
360 J
3.6 J
Fuse wire is generally made of alloy of
Tin and Lead
Nichrome
Lithium
Copper
An electrical appliances is rated 1500 W 250 V. This appliancie is connected to 250 V main. The current drawn is
6 A
4 A
12 A
15 A
When a current I flows through a resistance R for time t, the electrical energy spent is given by
IRt
I2Rt
IR2t
I2R/t
A bulb rated 100 W, 220 V. The resistance of its filament while glowing is
250 Ω
100 Ω
484 Ω
625 Ω
Which of the following wire is also called phase wire?
Neutral wire
Earth wire
Live wire
Both a and b
Factors which does not affect heat dissipation by a conductor is:
current
time
resistance
voltage
An electric bulb of 60 W is used for 6 hours per day. Calculate the energy consumed in one day by the bulb.
3.6 kWh
0.36 kWh
0.036 kWh
0.0036 kWh
The energy used in households, industries and commercial establishments are usually expressed in
Joule
Watt
Kilowatt - hour
volt
The electric appliances in a house are connected in
series
parallel
either series or parallel
both in series and parallel
