Question

UULLINIC PUWER
ors?
ppliances
them in
nected in
63) Which has a greater resistance, 1 kW electric heater or a 100
W filament bulb, both marked for 220 V?
64) What determines the rate at which energy is delivered by a
current?
65) In how much time will a bulb of 100 W consume an energy of
2 kWh?
66) An electric bulb is rated 220 V and 100 W. Calculate the power
consumed when it is operated on 110 V.
A bulb is rated at 220V, 100W. What is its resistance? Five
such bulbs burn for 5 hours, what is the electrical energy
consumed? Calculate the cost if the rate is 2.50 per unit.
68) Why incandescent lamps are not energy efficient?
69) A 100 Watt electric bulb is lighted for 2 hrs everyday and five
40 W tubes are lighted for 4 hrs everyday. Calculate i) the
energy consumed for 60 days and ii) the cost of electricity
consumed at the rate of Rs. 3 per unit.
67)
while the
. Find the
is purely
ater. Why?
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Answer 1

please write in a proper way