An electric bulb is labelled at 100w-220v. the bulb is connected to a supply of 120v. the heat produced by the bulb for 2 min
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Answered by
10
Answer:
240 joules ............
Answered by
15
Answer:
The bulb is rated 100 W
, 220V.
The maximum current the bulb can draw is I then,
V*I = 100 220*1 = 100 |
= 100/220 = 5/11 A J
The voltage is 115 V then,
the energy consumed per second is =115 | = 115 x 5/11 = 52.28 J/s (approx) %3D
If the bulb is lit for 20 min Then, the energy consumed is = 52.28 x 20 x 60 = 62736J
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