You buy a 75-w lightbulb in europe. where electricity is delivered to homes at 240 v.

please program work.

weight of light bulb is located by:
.
P = V2
/R 75
=2402
/R Roentgen
= 768 ohms
.
Today discover energy it makes use of whenever attached to 120 V:
.
P = V2 / Roentgen = 1202 /
768 = 18.75 Watts
.
Therefore versus a 75 watt light bulb can it be is just:
.
18.75 /
75 = 1/4
because brilliant

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